Processes Of Obtaining Nicotinamide Per Se Patents (Class 546/317)
  • Patent number: 10112889
    Abstract: The invention relates to a continuous method for producing a tenside, containing a compound of the formula (1), wherein R2 is a fatty acid alkyl residue and R1 is a linear or branched C1 to C12 hydrocarbon residue, and x is in the range from 1 to 15 by conversion of fatty acid alkyl esters or fatty acid triglycerides having an N-n-alkylized polyhydroxy compound in the presence of an alkali catalyst or a catalyst selected from hydroxides or alcoholates of the 2nd and 4th secondary group of the periodic system at a temperature in the range from 40 to 300° C.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: October 30, 2018
    Assignee: CLARIANT INTERNATIONAL LTD.
    Inventors: Jörg Appel, Dennis Heitmann, Sarah Werner
  • Patent number: 9074508
    Abstract: The present invention relates to an exhaust-gas purification device by means of which combustion exhaust gases emerging from combustion devices, in particular diesel engines, can be purified. At least a regeneration of the soot particle filter and/or the NOx catalytic converter can be attained by means of the exhaust-gas purification device.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: July 7, 2015
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Robert Szolak, Alexander Susdorf, Thomas Aicher
  • Publication number: 20150126734
    Abstract: The present disclosure relates to a single pot process for preparation of a N,N-di substituted carboxamide compounds of formula (I), said process comprising: reacting a carboxylic acid with a di-substituted carbamoyl chloride in presence of an organic tertiary base to obtain the N,N-di substituted carboxamide compounds of formula (I). The process of the present disclosure involves a simple step, and it is energy and time saving process for preparation of N,N-di substituted carboxamides.
    Type: Application
    Filed: December 20, 2011
    Publication date: May 7, 2015
    Applicant: DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGNISATION
    Inventors: Ambati Narasimha Rao, Kumaran Ganesan, Rajagopalan Vijayaraghavan
  • Patent number: 8952170
    Abstract: An improved catalytic process for the production of pyridine carboxylic acid amides, by catalytic hydration reaction of pyridine nitriles with solid heterogeneous catalyst wherein the process involve effective utilization and recycling of the catalytic components, and reactants.
    Type: Grant
    Filed: April 14, 2012
    Date of Patent: February 10, 2015
    Assignee: Jubilant Life Sciences, Ltd.
    Inventors: Mahendra Kumar, Shailendra Kumar Singh, Ashutosh Agarwal
  • Publication number: 20140081029
    Abstract: An improved catalytic process for the production of pyridine carboxylic acid amides, by catalytic hydration reaction of pyridine nitriles with solid heterogeneous catalyst wherein the process involve effective utilization and recycling of the catalytic components, and reactants.
    Type: Application
    Filed: April 14, 2012
    Publication date: March 20, 2014
    Inventors: Mahendra Kumar, Shailendra Kumar Singh, Ashutosh Agarwal
  • Patent number: 8575204
    Abstract: Compounds of formula (I): are inhibitors of p38 kinase and are useful in the treatment of conditions or disease states mediated by p38 kinase activity or mediated by cytokines produced by the activity of p38.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: November 5, 2013
    Assignee: GlaxoSmithKline LLC
    Inventors: Nicola Mary Aston, Paul Bamborough, Ann Louise Walker
  • Publication number: 20130123505
    Abstract: A carboxamide can be produced in a high yield by a method for producing a carboxamide, for example, represented by formula (4): (wherein R1 and R3 are as defined below), the method comprising a step of allowing a carboxylic acid ester represented by formula (1): (wherein R1 represents an optionally substituented C1-C20 hydrocarbon group or an optionally substituented C3-C20 heterocyclic group, and R2 represents an optionally substituented C1-C20 hydrocarbon group), an amine represented by formula (2): R3—NH2 ??(2) (wherein R3 represents a hydrogen atom or an optionally substituented C1-C20 hydrocarbon group), and a formamide compound represented by formula (3): (wherein R3 is as defined above) to react in the presence of a metal alkoxide.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 16, 2013
    Inventors: Junichi Tomokawa, Takahiro Kimura, Norihiko Hirata
  • Publication number: 20120022262
    Abstract: The present invention relates to a process for the hydrolysis of nitriles of the formulae and respectively of amides of the formulae in which R is in each case hydrogen or C1-20-alkyl, to give the corresponding amides and/or acids and respectively to give the corresponding acids.
    Type: Application
    Filed: April 21, 2008
    Publication date: January 26, 2012
    Inventors: Lothar Ott, Andreas Heyl, Norbert Clausen, Gregor Michalik, Herbert Vogel
  • Patent number: 8084476
    Abstract: This invention provides a compound of the formula (I): wherein X represents a carbon atom or the like: Y represents imino, or the like: R1 represents an alkyl group having from 1 to 6 carbon atoms or the like: R2 and R3 independently represents a hydrogen atom or the like. These compounds are useful for the treatment of disease conditions mediated by prostaglandin such as pain, or the like in mammalian. This invention also provides a pharmaceutical composition comprising the above compound.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: December 27, 2011
    Assignee: Raqualia Pharma Inc.
    Inventors: Hiroki Koike, Kana Kon-i, Yukari Matsumoto, Kazunari Nakao, Yoshiyuki Okumura, Tatsuya Yamagishi
  • Publication number: 20100190992
    Abstract: Nicotinamide compounds of the formula (1) and processes for the preparation thereof are described.
    Type: Application
    Filed: May 28, 2008
    Publication date: July 29, 2010
    Applicant: BAYER CROPSCIENCE AG
    Inventors: Sergii Pazenok, Uwe Stelzer, Harry Blaschke, Arnd Neeff, Lubbertus Mulder
  • Patent number: 7709506
    Abstract: Compounds of formula (I): are inhibitors of p38 kinase and are useful in the treatment of conditions or disease states mediated by p38 kinase activity or mediated by cytokines produced by the activity of p38.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: May 4, 2010
    Assignee: GlaxoSmithkline LLC
    Inventors: Nicola Mary Aston, Paul Bamborough, Ann Louise Walker
  • Patent number: 7456291
    Abstract: Use of a combination of two vitamin compounds, i.e. riboflavin (also known as vitamin B2) and nicotinic acid (also referred to as niacin) or, as an alternative thereto, the corresponding amide, i.e. niacinamide or nicotinamide (also known as vitamin PP) for the treatment of various forms of primary headache, such as classical migraine or migraine with an aura, common migraine or migraine without an aura, complicated migraine and cluster headache or histamine headache. The invention also concerns compositions for the treatment of primary headaches which are based on the two aforesaid active ingredients.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: November 25, 2008
    Inventor: Giampiero Valletta
  • Patent number: 7378412
    Abstract: Compounds or their salts having general formula: A-B—C—NO2 wherein: A is a drug radical; B is a linker; and C is a bivalent radical.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: May 27, 2008
    Assignee: Nicox S.A.
    Inventor: Piero Del Soldato
  • Patent number: 7345176
    Abstract: The present invention relates to an improved process for conversion of cyanopyridines to nicotinamides. More particularly the present invention relates to preparation of nicotinamides and isonicotinamides which finds its usage in the preparation of anti-TB drug i.e. isoniazid and as an intermediate of vitamin B12. The present invention also relates to a process for a catalyst useful for the preparation of nicotinamide and isonicotinamide.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: March 18, 2008
    Assignee: Council of Scientific and Industrial Research
    Inventors: Subhash Chandra Ray, Baldev Singh, Hiralal Prasad, Prodyot Kumar Sarkar, Pashupati Dutta, Shyam Kishore Roy, Anup Kumar Bandyopadhyay, Raja Sen
  • Patent number: 7317105
    Abstract: The invention relates to a method for producing 4-haloalkylnicotinamides having the formula (I): wherein R1 is (C1-C4)haloalky, comprising subjecting one or more 3-((C1-C4)haloalkyl-3-oxo-1-alkenylamino)nitriles of the formula (II), (III) or (IV): R1—C(O)—CH?CH—NH—CH?CH—CN??(II) R1—C(O)—CH?CH—NH—CH(ZR2)—CH2—CN??(III) R1—C(O)—CH?CH—NH—CH(Hal)—CH2—CN??(IV) where R1 is as defined above, R2 is the same or different and is (C1-C6)-alkyl and Z is the same or different and is O, S or NR1, to a ring-closing reaction and simultaneous hydrolysis in the presence of a strong acid.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: January 8, 2008
    Assignee: Bayer Cropscience AG
    Inventor: Sergiy Pazenok
  • Patent number: 7297796
    Abstract: Novel sulfamoyl benzamide compounds, pharmaceutical compositions containing the sulfamoyl benzamide compounds, and methods of their pharmaceutical use are disclosed. In certain embodiments, the sulfamoyl benzamide compounds are agonists and/or modulating ligands of cannabinoid receptors and may be useful, inter alia, for treating and/or preventing pain, gastrointestinal disorders, inflammation, auto-immune diseases, ischemic conditions, immune-related disorders, hypertension, neurological disorders, and neurodegenerative diseases, for providing cardioprotection against ischemic and reperfusion effects, for inducing apoptosis in malignant cells, for inhibiting mechanical hyperalgesia associated with nerve injury, and as an appetite stimulant.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: November 20, 2007
    Assignee: Adolor Corporation
    Inventors: Roland E. Dolle, Karin Worm, Q. Jean Zhou
  • Patent number: 7288658
    Abstract: The present invention relates to a process for the manufacture of compounds of formula wherein the substituents are as described herein which comprises the steps of a) reacting a compound of formula with a compound of formula to form a compound of formula b) converting the OH/?O function of compounds of formula XIV/XIVa into a leaving group P with a reagent containing a leaving group, selected from POCl3, PBr3, MeI and (F3CSO2)2O to form a compound of formula wherein P is halogen or trifluoromethanesulfonate; c) substituting R2 for the leaving group P by reacting compound XV with HR2 to form a compound of formula and d) hydrolyzing the nitrile function in an acidic medium selected from H2SO4, HCl and acetic acid, to form a compound of formula I The compounds of formula I are valuable intermediates for the manufacture of therapeutically active compounds which have NK-1 antagonist activity.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: October 30, 2007
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Wolfgang Goehring, Peter John Harrington, Lewis M Hodges, David A Johnston, Goesta Rimmler
  • Patent number: 7125898
    Abstract: Compounds of formula (I): are inhibitors of p38 kinase and are useful in the treatment of conditions or disease states mediated by p38 kinase activity or mediated by cytokines produced by the activity of p38.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: October 24, 2006
    Assignee: SmithKline Beecham Corporation
    Inventors: Nicola Mary Aston, Paul Bamborough, Ann Louise Walker
  • Patent number: 7122539
    Abstract: Nitric acid salts with medicines active in the respiratory system pathology treatment.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: October 17, 2006
    Assignee: Nicox S.A.
    Inventor: Piero Del Soldato
  • Publication number: 20040186297
    Abstract: The present invention relates to an improved process for conversion of cyanopyridines to nicotinamides More particularly the present invention relates to preparation of nicotinamides and isonicotinamides which finds its usage in the preparation of anti-TB drug i.e. isoniazid and as an intermediate of vitamin B12. The present invention also relates to a process for a catalyst useful for the preparation of nicotinamide and isonicotinamide.
    Type: Application
    Filed: March 20, 2003
    Publication date: September 23, 2004
    Inventors: Subhash Chandra Ray, Baldev Singh, Hiralal Prasad, Prodyot Kumar Sarkar, Pashupati Dutta, Shyam Kishore Roy, Anup Kumar Bandyopadhyay, Raja Sen
  • Publication number: 20040138270
    Abstract: The present invention describes compounds of the general formula I 1
    Type: Application
    Filed: December 10, 2003
    Publication date: July 15, 2004
    Inventors: Georg Fertig, Frank Herting, Matthias Koerner, Manfred Kubbies, Anja Limberg, Ulrike Reiff, Michael Weidner
  • Patent number: 6566403
    Abstract: This invention relates to new compositions comprising predominantly one enantiomer of an N-acetonylbenzamide fungicide, methods of preparing N-acetonylbenzamides, and their use as fungicides.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: May 20, 2003
    Assignee: Dow AgroSciences LLC
    Inventors: Enrique Luis Michelotti, David Hamilton Young, Thomas Anthony McLaughlin
  • Patent number: 6380218
    Abstract: A compound of formula (I) wherein m, n, o, p, q, r, A, B, D, E, R1, R2,R3, R4, R5, R6, R7 and R8 are as defined in the description, useful in the treatment of respiratory, allergic, rheumatoid, body weight regulation, inflammatory and central nervous system disorders such as asthma, chronic obstructive pulmonary disease, adult respiratory diseases syndrome, shock, fibrosis, pulmonary hypersensitivity, allergic rhinitis, atopic dermatitis, psoriasis, weight control, rheumatoid arthritis, cachexia, crohn's disease, ulcerative colitis, arthritic conditions and other inflammatory diseases, depression, multi-infarct dementia and AIDS.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: April 30, 2002
    Assignee: Pfizer Inc
    Inventors: Anthony Marfat, Robert J. Chambers, John W. Watson, John B. Cheng, Allen J. Duplantier, Edward F. Kleinman
  • Patent number: 6271372
    Abstract: A process for the preparation of arylamides of heteroaromatic carboxylic acids of the formula: in which each An is nitrogen or CRn(n=1 to 5), with the proviso that at least one of the ring members is nitrogen and that two nitrogen atoms are not bonded directly to one another; R1 to R5, if present, independently of one another are hydrogen, C1-4-alkyl or aryl, one of the substituents R1 to R5 being a group of the formula —OR, in which R is an optionally substituted aromatic or heteroaromatic radical; R6 is hydrogen or C1-4-alkyl; and R7 is an optionally substituted aromatic or heteroaromatic radical. The amides are obtained from the corresponding heteroaromatic halogen compounds, the corresponding aromatic amines and carbon monoxide in the presence of a palladium phosphine complex. Compounds of this class are important herbicides.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: August 7, 2001
    Assignee: Lonza AG
    Inventors: Jean-Paul Roduit, Georges Kalbermatten
  • Patent number: 6251827
    Abstract: Acylsulfamoylbenzamides of the formula I and crop protection compositions comprising them are described. In this formula I, R1, R2, R3, R4 and R5 are various organic radicals and X is CH or N.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: June 26, 2001
    Assignee: Hoechst Schering AgrEvo GmbH
    Inventors: Frank Ziemer, Lothar Willms, Thomas Auler, Hermann Bieringer, Christopher Rosinger
  • Patent number: 6218543
    Abstract: Described are processes for the large, commercial scale production of USP grade nicotinamide, wherein the USP grade product is isolated using novel strategies which minimize product waste, and avoid the need for crystallizations and/or ameliorate complications arising in crystallization strategies. Preferred processes involve the processing of nicotinamide reaction crudes over both cation exchange and weak base resins and the subsequent recovery of USP grade nicotinamide by simple evaporation.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: April 17, 2001
    Inventors: Martin Grendze, Susan L. Vorhies
  • Patent number: 6133478
    Abstract: A platinum complex useful as a catalyst for converting nitrites into amides comprises a platinum complex of dialkyl phosphine of stoichiometric formula: PtX(R.sub.2 POHOPR.sub.2)(PR.sub.2 OH) where R is an alkyl, alicyclic, chiral, alkylaryl group or substituted alkyl, alicyclic, chiral, alkaryl group or the two R groups attached to one phosphorous atom can form a heterocyclic ring with the phosphorous atom and X is H or a halide. The conversion takes place under reflux conditions to give a high yield of the amide.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: October 17, 2000
    Inventors: Adrian W Parkins, Talit Ghaffar
  • Patent number: 5900484
    Abstract: A process for the preparation of arylamides of heteroaromatic carboxylic acids of the formula: ##STR1## in which each A.sup.n is nitrogen or CR.sup.n (n=1 to 5), with the proviso that at least one of the ring members is nitrogen and that two nitrogen atoms are not bonded directly to one another; R.sup.1 to R.sup.5, if present, independently of one another are hydrogen, C.sub.1-4 -alkyl or aryl, one of the substituents R.sup.1 to R.sup.5 being a group of the formula --OR, in which R is an optionally substituted aromatic or heteroaromatic radical; R.sup.6 is hydrogen or C.sub.1-4 -alkyl; and R.sup.7 is an optionally substituted aromatic or heteroaromatic radical. The amides are obtained from the corresponding heteroaromatic halogen compounds, the corresponding aromatic amines and carbon monoxide in the presence of a palladium phosphine complex. Compounds of this class are important herbicides.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: May 4, 1999
    Assignee: Lonza AG
    Inventors: Jean-Paul Roduit, Georges Kalbermatten
  • Patent number: 5863950
    Abstract: HIV protease inhibitors, obtainable by chemical synthesis, block the biological activity of the HIV protease enzyme, causing the replication of the HIV virus to terminate. These compounds, as well as pharmaceutical compositions that contain these compounds and possibly other anti-viral agents as ingredients, are thus suitable for the treatment of the HIV virus known to cause AIDS.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: January 26, 1999
    Assignee: Agouron Pharmaceuticals, Inc.
    Inventors: Siegfried H. Reich, Kathleen Lewis, Michael Melnick, Mary Ann M. Fuhry, Stephen Warren Kaldor
  • Patent number: 5763614
    Abstract: 1,4-dihydropyridine derivatives and optically active 1,4-dihydropyridine derivatives with the following formula, having vasodilating activity based on calcium antagonism, and PAF antagonism, and methods of producing the same are disclosed: ##STR1## wherein (*) indicates a chiral center in the case of the optically active 1,4-dihydropyridine derivatives.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: June 9, 1998
    Assignee: Fujirebio Inc.
    Inventors: Hiroshi Ikawa, Akiyoshi Kadoiri, Yasuko Konagai, Tetsuaki Yamaura, Noriko Kase
  • Patent number: 5756750
    Abstract: Described are preferred processes for hydrolyzing substituted and unsubstituted cyanopyridines in the presence of a base and under substantially adiabatic conditions to produce pyridine substituted amides and/or pyridine substituted carboxylic acids. Preferred processes can be conducted in a variety of continuous reactors including cascades of reaction vessels, loop reactors or flow tube reactors. More preferred are the efficient and advantageous preparations of nicotinamide and niacin, which serve as important members of the B-vitamin complex.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: May 26, 1998
    Assignee: Reilly Industries, Inc.
    Inventors: Wei Cao, Robert A. Kattau, George Kreilis
  • Patent number: 5714518
    Abstract: HIV protease inhibitors, obtainable by chemical synthesis, block the biological activity of the HIV protease enzyme, causing the replication of the HIV virus to terminate. These compounds, as well as pharmaceutical compositions that contain these compounds and possibly other anti-vital agents as ingredients, are thus suitable for the treatment of the HIV virus known to cause AIDS.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: February 3, 1998
    Assignee: Agouron Pharmaceuticals
    Inventors: Siegfried H. Reich, Mark J. Pino, Dzuy T. Nguyen, Anthony J. Trippe
  • Patent number: 5614636
    Abstract: A process for the preparation of carboxamides of nitrogen-containing aromatic heterocyclic compounds from the corresponding N-heterocyclic compounds by reaction thereof with formamide in the presence of peroxodisulfuric acid or a peroxodisulfate.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: March 25, 1997
    Assignee: Lonza Ltd.
    Inventors: Jean-Paul Roduit, Alain Wellig, Karin Amacker, Martin Eyer
  • Patent number: 5206372
    Abstract: Certain 2-chloropyridine derivatives, which are useful as starting materials for the preparation of various herbicides and fungicides, are prepared by cyclization of 1,3-butadiene derivatives in the presence of hydrogen chloride.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: April 27, 1993
    Assignee: Shell Research Limited
    Inventor: Ludwig Schroder
  • Patent number: 5142057
    Abstract: A process for producing a carboxylic acid amide or ester, which comprises reacting an organic chloride having at least one chlorine atom on its ring of a substituted or unsubstituted, aromatic or heterocyclic hydrocarbon with carbon monoxide and an amine or an alcohol in the presence of a base by using as catalysts a palladium compound and a phosphine compound represented by the general formula (V):(R).sub.2 P--X--P(R).sub.2 (V)wherein R is an alkyl group or a substituted or unsubstituted phenyl group, and X is an alkylene group having 1 to 6 carbon atoms ##STR1## or a binaphthyl group.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: August 25, 1992
    Assignee: Nihon Nohyaku Co., Ltd.
    Inventors: Keiji Suto, Masaaki Kudo, Moriharu Yamamoto
  • Patent number: 5107057
    Abstract: This invention relates to certain cyano-dienes and halopyridines and the processes for their preparation from a protected 1,3-dialdehyde and a cyano-diene.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: April 21, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: George C. Chiang, Felix E. Granchelli, Christopher Wright
  • Patent number: 5008276
    Abstract: Fungicidal compounds of the formula (I): ##STR1## and stereoisomers thereof, wherein K is oxygen or sulphur; Z is optionally substituted aryl or optionally substituted heteroaryl; X is O, S(O).sub.n, NR.sup.4, CR.sup.1 R.sup.2, CHR.sup.5, CO, CR.sup.1 (OR.sup.2), C.dbd.CR.sup.1 R.sup.2, CHR.sup.1 CHR.sup.2, CR.sup.1 .dbd.CR.sup.2, CHR.sup.1 CR.sup.2 .dbd.CH, C.dbd.C, OCHR.sup.1, CHR.sup.1 O, OCHR.sup.1 O, S(O).sub.n CHR.sup.1, S(O).sub.n CHR.sup.1 O, CHR.sup.1 S(O).sub.n, CHR.sup.1 OSO.sub.2, NR.sup.4 CHR.sup.1, CHR.sup.1 NR.sup.4, CO.sub.2, O.sub.2 C, SO.sub.2 O, OSO.sub.2, CO.CO, COCHR.sup.1, COCHR.sup.1 O, CHR.sup.1 CO, CHOH.CHR.sup.1, CHR.sup.1.CHOH, ##STR2## CONR.sup.4, OCONR.sup.4, NR.sup.4 CO, CSNR.sup.4, OCS.NR.sup.4, SCO.NR.sup.4, NR.sup.4 CO.sub.2, NR.sup.4 CS, NR.sup.4 CSO, NR.sup.4 COS, NR.sup.4 CONR.sup.4, S(O).sub.n NR.sup.4, NR.sup.4 S(O).sub.n, CS.sub.2, S.sub.2 C, CO.S, SCO, N.dbd.N, N.dbd.CR.sup.1, CR.sup.1 .dbd.N, CHR.sup.1 CHR.sup.2 CH(OH), CHR.sup.1 OCO, CHR.sup.1 SCO, CHR.sup.1 NR.sup.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: April 16, 1991
    Assignee: Imperial Chemical Industries PLC
    Inventors: John M. Clough, Christopher R. A. Godfrey, Stephen P. Heaney, Kenneth Anderton
  • Patent number: 4681946
    Abstract: A process for the preparation of nicotinamide by amidation of a nicotinic acid/nicotinamide melt, vacuum distillation of the amidation mixture, removal of the nicotinamide as the bottom product and recycling of the top product, depleted with respect to nicotinamide, into the amidation stage together with addition of fresh amounts of nicotinic acid.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: July 21, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl G. Baur, Volker Diehl, Peter Stops, Hans Hellbach, Erwin Brunner
  • Patent number: 4503231
    Abstract: Hydrolysis of nitrile to amide by use of a quaternary ammonium hydroxide at 60.degree. to 95.degree. C.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: March 5, 1985
    Assignee: The Lummus Company
    Inventors: George D. Suciu, Joon T. Kwon
  • Patent number: 4447615
    Abstract: Crude nicotinamide is purified by a recrystallization and in this way freed especially from nicotinic acid and salts of nicotinic acid. As solvent there is used a 2-methylpropanol-1 containing water. The recrystallization takes place at a pH between about 7 and 10.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: May 8, 1984
    Assignee: Degussa Aktiengesellschaft
    Inventors: Helmut Beschke, Franz-Ludwig Dahm, Heinz Friedrich, Gunter Prescher
  • Patent number: 4327219
    Abstract: In the hydrolysis of nicontinonitrile to nicotinamide, the hydrolysis effluent, containing nicotinamide, unconverted nicotinonitrile, ammonia and some ammonium nicotinate is stripped with gaseous ammonia to produce a molten nicontinamide bottoms, essentially free of nicotinonitrile, containing less than 10 wt % water and an overhead containing water vapor, ammonia and nicotinonitrile. An aqueous solution of ammonia and unreacted nicotinonitrile is recovered from the overhead and recycled to the hydrolysis, with gaseous ammonia in the overhead being recycled to the stripping.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: April 27, 1982
    Assignee: The Lummus Company
    Inventor: Abraham P. Gelbein
  • Patent number: 4314064
    Abstract: Nicotinamide is prepared from nicotinonitrile by hydrolysis at 120.degree. to 200.degree. C. employing alkali hydroxide.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: February 2, 1982
    Assignee: Detusche Gold- und Silber-Scheindeanstalt vormals Roessler
    Inventors: Helmut Beschke, Heinz Friedrich, Klaus-Peter Muller, Gerd Schreyer
  • Patent number: 4304937
    Abstract: A process of preparing a carboxylic acid amide which comprises reacting (a) an aldehyde with (b) at least one compound selected from the group consisting of ammonia, a primary amine and a secondary amine in the presence of a molecular oxygen-containing gas and palladium metal or platinum metal as the catalyst.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: December 8, 1981
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Nishikido Joji, Tamura Nobuhiro, Fukuoka Yohei
  • Patent number: 4304917
    Abstract: In the crystallization of a material from a liquid solution thereof wherein normal rapid cooling produces a non-filterable solid, the mixture of material and liquid is subjected to a high shear force field to produce a filterable slurry of the material, with the mixture being subjected to the shear force either during the cooling or subsequent thereto. The process is particularly applicable to recovering nicotinamide from a supersaturated aqueous solution thereof.
    Type: Grant
    Filed: June 18, 1980
    Date of Patent: December 8, 1981
    Assignee: The Lummus Company
    Inventor: George D. Suciu
  • Patent number: 4139536
    Abstract: Nicotinamide is recovered from the reaction mixture resulting from the hydrolysis of nicotinonitrile at elevated temperature by converting the nicotinamide into a melt while removing the solvent.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: February 13, 1979
    Assignee: Deutsche Gold- Und Silber-Scheideanstalt vormals Roessler
    Inventors: Helmut Beschke, Heinz Friedrich, Klaus-Peter Muller, Gerd Schreyer
  • Patent number: 4128554
    Abstract: Carboxylic acid amides are obtained from aryl, heterocyclic, and vinylic halides and substituted derivates thereof, by reacting same with a primary or secondary amine and carbon monoxide, in the presence of a palladium catalyst and if necessry a tertiary amine at about 20.degree.-150.degree. C and from at least a half atmosphere pressure.
    Type: Grant
    Filed: March 10, 1977
    Date of Patent: December 5, 1978
    Assignee: University of Delaware
    Inventor: Richard F. Heck