Nitrogen Attached Directly To The Hetero Ring By Nonionic Bonding Patents (Class 549/63)
  • Patent number: 4594430
    Abstract: Geminal dinitro compounds are prepared by reacting an organic nitro compound having a replaceable hydrogen on the carbon to which the nitro group is attached with a source of nitrite ions in the presence of an oxidizing agent and a catalytic amount of an alkali metal ferricyanide.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: June 10, 1986
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Vytautas Grakauskas, Lee C. Garver, Kurt Baum
  • Patent number: 4575556
    Abstract: Novel homocysteine thiolactone bifunctional chelating agents useful for chelating radionuclides to produce a radiodiagnostic agent for use in in vivo imaging and a method for producing this chelating agent.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: March 11, 1986
    Assignee: Medi-Physics, Inc.
    Inventors: Edmund F. Byrne, Glen L. Tolman
  • Patent number: 4565826
    Abstract: This invention relates to a novel class of heterocyclic amidinourea and heterocyclic amidinothiourea compounds wherein the heterocyclic substitution is at the 1-N urea nitrogen atom. These compounds exhibit pharmaceutical activity and may be incorporated into pharmaceutical preparations for producing anti-ulcerogenic, antisecretory, antispasmodic, antimotility, cardiovascular, antidiarrheal or antiparasitic action.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: January 21, 1986
    Assignee: William H. Rorer, Inc.
    Inventors: William L. Studt, Harry K. Zimmerman, George H. Douglas
  • Patent number: 4508731
    Abstract: Compounds of the formula ##STR1## in which Ar is 2-alkyl-, -alkoxy- or -halo-methyl-phenyl or .alpha.-naphthyl, each of which is further substituted,R.sub.1 is 2-furyl, 2-tetrahydrofuryl, alkenyl, cyclopropyl, .beta.-alkoxyethyl, hydroxymethyl, triazolylmethyl, imidazolylmethyl, pyrazolylmethyl, alkylsulfinyl, alkylsulfonyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkenylthio, alkynylthio, alkylsulfinyloxy, dialkylaminosulfinyloxy, phosphoric or thiophosphoric esters or amides, or alkylcarbonyloxy, andR.sub.9 is hydrogen or methyl,are microbicidally, in particular fungicidally active. The preferred compounds are those in which Ar is 2-methylphenyl, 2-methoxyphenyl, 2-chlorophenyl or .alpha.-naphthyl, each of which is further substituted by azido, and R.sub.9 is hydrogen.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: April 2, 1985
    Assignee: Ciba Geigy Corporation
    Inventors: Peter Riebli, Hanspeter Fischer, Rudolph C. Thummel, Adolf Hubele
  • Patent number: 4472425
    Abstract: The invention provides novel N-acylamino thiophene derivatives, e.g. N-(methoxyacetyl)-N-(5-bromo-4-methyl-2-methylthiothien-3-yl)alanine methyl ester, which are useful as fungicides. Other objects of the invention are fungicidal compositions comprising such novel compounds and methods of combatting phytopathogenic fungi with the acid of said novel compounds.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: September 18, 1984
    Assignee: Sandoz Ltd.
    Inventors: Rudolf Sandmeier, Karl Seckinger
  • Patent number: 4463176
    Abstract: A process for resolving a racemic modification of .beta.-adrenergic aryl- or hetaryl-oxypropanolamines such as (.+-.)-2-[2-hydroxy-3-[[2-(1H-indol-3-yl)-1,1-dimethylethyl]amino]propoxy] benzonitrile into its individual enantiomers is described. The process comprises converting the racemic modification into a pair of diastereomeric urea derivatives by reaction with a chiral aralkylisocyanate; separation into the individual diastereomers; and facile regeneration of the starting amine by cleavage of the intermediate urea compound using hydrazine. This final step is improved by the addition of an .alpha.-keto carboxylic acid, such as pyruvic acid, which functions as a scavenger of nucleophilic by-products.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: July 31, 1984
    Assignee: Mead Johnson & Company
    Inventors: Ronald D. Dennis, Terence M. Dolak, William E. Kreighbaum
  • Patent number: 4451660
    Abstract: The invention relates to new nitrothiophenes of the general formula ##STR1## wherein R is an alkyl group having 1 to 12 carbon atoms, which alkyl group may be substituted with a phenyl group substituted, if desired, with nitro, halogen, alkyl with 1 to 4 carbon atoms or alkoxy with 1 to 4 carbon atoms, with an alkoxycarbonyl group having 2 to 5 carbon atoms, or with a thiocyanato group, orR is a phenyl group, a pyridyl group or an N-oxypyridyl group, which groups may be substituted with nitro, halogen, alkyl with 1 to 4 carbon atoms, or alkoxy with 1 to 4 carbon atoms;R.sub.1 is a hydrogen atom, a halogen atom, an alkyl group having 1 to 4 carbon atoms, or a phenyl group substituted or not substituted with nitro, halogen, alkyl with 1 to 4 carbon atoms, or alkoxy with 1 to 4 carbon atoms;R.sub.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a cyano group, an alkanoyl group having 1 to 5 carbon atoms, an .alpha.,.alpha.-dialkoxyalkyl- or .alpha.,.alpha.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: May 29, 1984
    Assignee: Duphar International Research B.V.
    Inventors: Hendrik Dolman, Johannes Kuipers
  • Patent number: 4448773
    Abstract: Compounds of the formula ##STR1## in which Ar is 2-alkyl-, -alkoxy- or -halo-methyl-phenyl or .alpha.-naphthyl, each of which is further substituted,R.sub.1 is 2-furyl, 2-tetrahydrofuryl, alkenyl, cyclopropyl, .beta.-alkoxyethyl, hydroxymethyl, triazolylmethyl, imidazolylmethyl, pyrazolylmethyl, alkylsulfinyl, alkylsulfonyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkenylthio, alkynylthio, alkylsulfinyloxy, dialkylaminosulfinyloxy, phosphoric or thiophosphoric esters or amides, or alkylcarbonyloxy,R.sub.7 is hydrogen or optionally-substituted methyl or ethyl, andR.sub.8 is alkyl optionally substituted by alkoxy,are microbicidally, in particular fungicidally, active. Preferred compounds are those in which Ar is 2-methylphenyl, 2-methoxyphenyl, 2-chlorophenyl or .alpha.-naphthyl, each of which is further substituted by azido, and each of R.sub.7 and R.sub.8 is methyl.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: May 15, 1984
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Riebli, Hanspeter Fischer, Rudolph C. Thummel, Adolf Hubele
  • Patent number: 4440780
    Abstract: 3-(N-acyl-N-arylamino) and 3-(N-thionoacyl-N-arylamino)-gamma-butyrolactones and thiobutyrolactones have fungicidal activity.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: April 3, 1984
    Assignee: Chevron Research Company
    Inventor: David C. K. Chan
  • Patent number: 4438282
    Abstract: Sulfides prepared by reacting a sulfoxide with a hydrazine or hydroxylamine derivative or a quaternary salt thereof are useful starting materials for the preparation of drugs, pesticides and dyes.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: March 20, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hartmut Lardon, Guenther Seybold
  • Patent number: 4434151
    Abstract: Novel homocysteine thiolactone bifunctional chelating agents useful for chelating radionuclides to produce a radiodiagnostic agent for use in in vivo imaging and a method for producing this chelating agent.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: February 28, 1984
    Assignee: Medi-Physics, Inc.
    Inventors: Edmund F. Byrne, Glen L. Tolman
  • Patent number: 4433154
    Abstract: Bis(carboxamide) derivatives being useful as histamine H.sub.2 receptor antagonists or anti-peptic ulcer agents are provided from certain dicarboxylic acid derivatives.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: February 21, 1984
    Assignee: Shionogi & Company, Limited
    Inventor: Kentaro Hirai
  • Patent number: 4432786
    Abstract: Compounds of the formula: ##STR1## wherein R.sup.1 is H or alkyl; R.sup.2 and R.sup.3 are independently H, alkyl, aryl or substituted aryl; R.sup.4 is H or alkoxycarbonyl; R.sup.5 is H, acyl or a cation; and Z is thienyl or substituted thienyl.The compounds exhibit grass herbicide activity and are prepared via the reaction of the appropriately substituted cyclohexane-1,3-dione with the appropriate thienylmethoxyamine derivative and optionally acylating this product at the 3-hydroxy position or converting it to the cation salt.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: February 21, 1984
    Assignee: Chevron Research Company
    Inventor: William Loh
  • Patent number: 4412856
    Abstract: The novel compounds of the formula I are useful selective herbicides for postemergence application in crops of cereals, maize and rice.In formula I, ##STR1## A is an unsubstituted or substituted amino group, Q is a C.sub.2 -C.sub.6 alkylene bridge, Y is an oxygen or sulfur atom or an unsubstituted or substituted nitrogen atom, and Z is an unsubstituted or substituted phenyl, naphthyl or heterocyclic radical, which phenyl radical, containing the bridge member Y, can additionally carry one to four further substituents.
    Type: Grant
    Filed: May 22, 1981
    Date of Patent: November 1, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Hans-Georg Brunner, Rolf Schurter, Henry Szczepanski
  • Patent number: 4411909
    Abstract: The present invention relates to [(2-oxo-3-tetrahydrothienylcarbamoyl)-alkylthio]-acetic acids, their salts and esters of formula: ##STR1## in which n is 0 or 1, one of the substituents R.sub.1 and R.sub.2 is a hydrogen atom or a methyl group and the other represents a group -S-CH.sub.2 -COOR.sub.3, where R.sub.3 is a hydrogen atom or an alkali metal or a lower alkyl group or a group: ##STR2## It also relates to a process for preparing said acids, salts and esters, and to the drugs containing same.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: October 25, 1983
    Assignee: Refarmed, Recherches Pharmaceutiques et Medicales, S.A.
    Inventor: Jacques Gonella
  • Patent number: 4407817
    Abstract: 3-(N-acyl-N-arylamino) and 3-(N-thionoacyl-N-arylamino)-gamma-butyrolactones and thiobutyrolactones have fungicidal activity.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: October 4, 1983
    Assignee: Chevron Research Company
    Inventor: David C. K. Chan
  • Patent number: 4398939
    Abstract: This invention covers thiophenesulfonylureas of Formula I, agriculturally suitable compositions containing them, and their method-of-use as general and/or selective preemergent and/or postemergent herbicides or plant growth regulants.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: August 16, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George Levitt
  • Patent number: 4383994
    Abstract: N-Maleyl homocysteine thiolactone amide, N-maleamide homocysteine thiolactone amide, oxalyl homocysteine thiolactone hydroperchlorate, and rhodium trichloride oxalyl homocysteine thiolactone hydroperchlorate are useful as anti-neoplastic agents.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: May 17, 1983
    Inventor: Kilmer S. McCully
  • Patent number: 4368327
    Abstract: A process for the preparation of 3-(arylamino)-tetrahydrothiophen-2-one derivatives is described in which the corresponding 3-(N-arylamino)-tetrahydrofuran-2-one derivatives are reacted with salts of thiocarboxylic acids. 3-(N-Arylamino)-tetrahydrothiophen-2-one derivatives are usable fungicides for plants.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: January 11, 1983
    Assignee: Ciba-Geigy Corporation
    Inventor: Walter Kunz
  • Patent number: 4355036
    Abstract: Antihistamines of the formula ##STR1## wherein ##STR2## is a 5 or 6 membered ring which is phenyl or heterocyclic; ##STR3## is a six membered ring which is 2,3 or 4 pyridyl or is phenyl or substituted phenyl, with the proviso that is ##STR4## is a nitrogen containing ring, ##STR5## must be phenyl; Z is an alkylene chain having 0 to 2 carbon atoms in the chain, said 2 carbon chain optionally having one double bond, said chain optionally having either a carbonyl oxygen, or a hydroxy group as a substituent; W is ##STR6## wherein p is 1 or 2 and n is 1 or 2, R.sup.1 is C.sub.1 to C.sub.6 alkyl, R.sup.2 is hydrogen or C.sub.1 to C.sub.6 alkyl, and the dotted line represents an optical double bond, R.sup.2 being absent if the double bond is present, and Y is substituted carboxylate or substituted sulfonyl. Said antihistamines have little or no sedative effects.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: October 19, 1982
    Assignee: Schering Corporation
    Inventor: Frank J. Villani
  • Patent number: 4344956
    Abstract: Biological activity is retained while reducing toxicity to animals, particularly mammals, e.g. humans, when a physiologically-active and pharmacologically-acceptable compound (having or structurally modified to have an aldehyde function) is condensed with any of the six (mono)amino(mono)oxotetrahydrothiophenes, e.g. homocysteine thiolactone, to form a Schiff Base (a 4-butyrothiolactone-2-imine or .gamma.-thiobutyrolactone-.alpha.-imine). The invention is directed to every Schiff Base which is a condensate of a physiologically-active and pharmacologically-acceptable compound with a (mono)amino(mono)oxotetrahydrothiophene. These Schiff Bases have a unifying common property in reduced toxicity, while maintaining the biological properties "carried" by the imine substituents. They concurrently have at most an insignificant adverse affect on pharmacological activity.
    Type: Grant
    Filed: April 6, 1976
    Date of Patent: August 17, 1982
    Inventor: Nicolo Ercoli
  • Patent number: 4335138
    Abstract: Novel carbamates derived from substituted cyclic .beta.-keto-alcohols, their preparation, and pharmaceutical formulations which contain these compounds and which may be used as hypnotics in the treatment of sleep disturbance and as sedatives.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: June 15, 1982
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter-Wielant Wiersdorff, Karl-Heinz Geiss, Harald Weifenbach, Wolfgang Worstmann, Dieter Lenke, Rolf Kretzschmar
  • Patent number: 4311849
    Abstract: A novel process for making 3-(N-arylamino)-gamma-butyrothiolactones from their corresponding butyrolactone analogs is disclosed. The thiolactone products are useful intermediates for making fungicidal compounds.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: January 19, 1982
    Assignee: Chevron Research
    Inventor: Stephen D. Ziman
  • Patent number: 4310463
    Abstract: 3-(N-arylamino)-gamma-butyrolactones, butyrolactams and thiobutyrolactones are intermediates for compounds having fungicidal activity.
    Type: Grant
    Filed: August 17, 1979
    Date of Patent: January 12, 1982
    Assignee: Chevron Research
    Inventor: David C. K. Chan
  • Patent number: 4304941
    Abstract: A method of preparing substituted acylbenzenes is disclosed. The method comprises reacting selected acylhalides or equivalents with a selected poly-substituted benzene in the presence of an acylating catalyst comprising a clay.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: December 8, 1981
    Assignee: Hoechst Roussel Pharmaceuticals, Inc.
    Inventors: Thomas B. K. Lee, Gregory M. Jobin
  • Patent number: 4303669
    Abstract: Novel hybrid 1,3-dione-carbamate compounds which exhibit utility as insecticides and acaricides. Also included are insecticidal and acaricidal compositions containing these compounds and a method of controlling insects and acarids.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: December 1, 1981
    Assignee: Union Carbide Corporation
    Inventor: Themistocles D. J. D'Silva
  • Patent number: 4298613
    Abstract: Heterocyclic sulfenamides, such as N-[2-chloro-5-(trifluoromethyl)phenyl]-N-[2,4-dinitro-6-trifluoromethyl)ph enyl]-3-nitro-2-pyridinesulfenamide, are useful as miticides, insecticides, fungicides and ovicides.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: November 3, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gerald E. Lepone
  • Patent number: 4287210
    Abstract: There are described acylaniline derivatives which in the phenyl ring are substituted in the meta-position with respect to the amino group by an aliphatic oxymethyl group or aryloxymethyl group, or by an aliphatic thiomethyl group or arylthiomethyl group. Compounds of this type have a very favorable microbicidal spectrum. They are used principally for combating phytopathogenic fungi and bacteria.
    Type: Grant
    Filed: November 21, 1979
    Date of Patent: September 1, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Wolfgang Eckhardt, Walter Kunz, Adolf Hubele
  • Patent number: 4283414
    Abstract: The invention concerns novel pesticidal esters of the pyrethrin or pyrethroid type in which the methylene group bonded to the ester carbonyl and/or ester oxygen bears a fluorine substituent. The compounds of the invention are active against insect pests including flies, moths, aphids and beetles and acarina pests including ticks.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: August 11, 1981
    Assignee: ICI Australia Limited
    Inventors: Donald W. G. Harney, Peter G. Lehman, Joseph C. Rundle
  • Patent number: 4260410
    Abstract: Novel N-haloacetylphenylamino carbonyl oximes represented by the formula ##STR1## wherein Ar is phenyl or substituted phenyl; R.sup.1 is halomethyl; R.sup.2 and R.sup.3 are each independently hydrogen, alkyl, phenyl, benzyl, substituted phenyl or benzyl, haloalkyl, cyanoalkyl, alkoxyalkyl, alkylthioalkyl or thiocyanoalkyl; R.sup.4 is hydrogen or alkyl; n is 0 or 1; m is 0 or 1; R is hydrogen, alkyl, alkenyl, alkynyl, alkylthioalkyl, haloalkyl, alkoxyalkyl, cyanoalkyl, phenyl, benzyl, substituted phenyl or benzyl, or R is acyl of the formula ##STR2## wherein R.sup.5 is hydrogen, alkyl, haloalkyl, alkoxyalkyl, alkylthioalkyl, alkoxy, alkylthio, acetonyl, or the group -NR'R" wherein R' and R" are independently hydrogen, alkyl or phenyl; with the proviso that R.sup.2 and R.sup.3 may be joined together to form a carbocyclic ring or a heterocyclic ring; or R and R.sup.2 may be joined together to form a heterocyclic ring; or R and R.sup.3 may be joined together to form a heterocyclic ring.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: April 7, 1981
    Assignee: Chevron Research Company
    Inventors: William L. Schinski, David C. K. Chan, Irene C. Huang
  • Patent number: 4255443
    Abstract: Homocysteine thiolactone perchlorate is prepared from the corresponding homocysteine thiolactone hydrochloride and optimally about two equivalents of perchloric acid as reactants. A preferred solvent utilized is chloroform-methanol (4:1) solution and a preferred temperature range is 0.degree.-85.degree. C. with the lower limit dependent upon the particular solvent and the upper limit of about 186.degree. C. dependent upon the melting point of the product crystals. The preferred perchloric acid reactant may be replaced with perchlorate salts such as AgClO.sub.4 or KClO.sub.4. The product perchlorate salt is soluble in organic solvents, whereas other known salts such as the hydrochloride are only water soluble. This property is thought to influence the growth effect of the perchlorate salt in animals, such as rabbits, and to influence the unique effect of the perchlorate salt on the growth of malignant tumors in animals, such as mice.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: March 10, 1981
    Assignee: The United States of America as represented by the Department of Health, Education and Welfare
    Inventor: Kilmer S. McCully
  • Patent number: 4241078
    Abstract: 3-(N-acyl-N-arylamino)-gamma-butyrolactones and thiobutyrolactones have fungicidal activity.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: December 23, 1980
    Assignee: Chevron Research Company
    Inventor: David C. K. Chan
  • Patent number: 4230872
    Abstract: Novel 9-substituted or unsubstituted thienyl-3,7-dimethyl-nona-2,4,6,8-tetraene derivatives, useful as antitumor agents as well as processes for their preparation and novel intermediates are disclosed.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: October 28, 1980
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Michael J. Klaus, Beverly A. Pawson
  • Patent number: 4224453
    Abstract: A process for making a compound of the formula ##STR1## which process comprises contacting, in the absence of an acid acceptor, an acyl halide with an aniline substituted gamma-butyrolactone in the presence of a non-basic solvent and at a temperature between 65.degree. and 150.degree. C. Thus, 3-(N-chloroacetyl-N-2,6-dimethylphenylamino)-gamma-butyrolactone is prepared by a process comprising contacting, in the absence of an added acid acceptor, chloroacetylchloride with 3-(N-2,6-dimethylphenylamino)-gamma-butyrolactone in the presence of a non-basic organic solvent and at a temperature between 65.degree. and 150.degree. C. Preferably, the 3-(N-2,6-dimethylphenylamino)-gamma-butyrolactone is formed by reacting alpha-bromo-gamma-butyrolactone with dimethylaniline in the presence of water and in a non-basic organic solvent, and the 3-(N-2,6-dimethylphenylamino)-gamma-butyrolactone in the organic solvent is phase separated and fed straight through to the acetylation step.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: September 23, 1980
    Assignee: Chevron Research Company
    Inventors: Richard N. Reynolds, Jr., Stephen D. Ziman, David C. K. Chan
  • Patent number: 4203904
    Abstract: A process for producing a lactone-substituted aniline wherein a 3-halo-tetrahydro-2-oxofuran is reacted with an aniline in the presence of water and a base at a temperature between 80.degree. and 160.degree. C. and wherein the base is added at a sufficiently slow rate so that the pH does not exceed about 7.5.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: May 20, 1980
    Assignee: Chevron Research Company
    Inventor: Richard N. Reynolds, Jr.
  • Patent number: 4174210
    Abstract: Novel N-haloacetylphenylamino carbonyl oximes represented by the formula ##STR1## wherein Ar is aryl, R.sup.1 is halomethyl, R.sup.2 is hydrogen, alkyl or aryl, R.sup.3 is hydrogen, alkyl or aryl, n is 0 or 1 and R is hydrogen, aryl, alkyl, alkenyl or alkynyl, with the proviso that R.sup.2 and R.sup.3 may be joined together to form a carbocyclic ring of 5 to 6 carbon atoms or a heterocyclic ring of one N, O or S hetero atom and 4 to 5 carbon atoms. The oxime compounds are useful as herbicides and plant growth regulators.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: November 13, 1979
    Assignee: Chevron Research Company
    Inventors: William L. Schinski, Irene C. Huang, David C. K. Chan
  • Patent number: 4165322
    Abstract: A process for producing a lactone-substituted aniline wherein an alpha-halo-gamma-butyrolactone is reacted with an aniline in the presence of water at a temperature between 80.degree. and 160.degree. C. Thus, 3-(N-2,6-dimethylphenylamino)-gamma-butyrolactone is prepared by reacting an alpha-halo-gamma-butyrolactone with 2,6-dimethylaniline in the presence of water and an inert organic solvent at a temperature between 80.degree. and 160.degree. C. This process is advantageously combined with a subsequent acylation step to provide a continuous means for making materials such as 3-(N-chloroacetyl-N-2,6-dimethylphenylamino)-gamma-butyrolactone.
    Type: Grant
    Filed: November 1, 1977
    Date of Patent: August 21, 1979
    Assignee: Chevron Research Company
    Inventor: Richard N. Reynolds, Jr.