Patents by Inventor Ernst Kysela

Ernst Kysela has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7250521
    Abstract: 2,5-Bisaryl-?1-pyrrolines of the formula (I) in which Ar1 and Ar2 are as defined in the description can be prepared by reacting aroylpyrrolidinones of the formula (II) in which Ar1 and Ar2 are as defined in the description with an acid, if appropriate in the presence of a diluent.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: July 31, 2007
    Inventors: Udo Kraatz, Andrew Plant, Ernst Kysela, Albrecht Marhold
  • Publication number: 20040147764
    Abstract: 2,5-Bisaryl-&Dgr;1-pyrrolines of the formula (I) 1
    Type: Application
    Filed: March 8, 2004
    Publication date: July 29, 2004
    Inventors: Udo Kraatz, Andrew Plant, Ernst Kysela, Albrecht Marhold
  • Patent number: 6455725
    Abstract: The invention relates to substituted cinnamic acids and cinnamic acid esters of formula (I), wherein X represents F, Cl or J and R1 and R2 are the same or different and represent hydrogen, an optionally substituted C1-C10-alkyl radical or an optionally substituted benzyl radical. Substituted indanone carboxylic acid esters are produced using said substituted cinnamic acid and cinnamic acid ester in a technically simple and non-dangerous manner as far as safety is concerned.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: September 24, 2002
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Lange, Joachim Komoschinski, Guido Steffan, Ernst Kysela
  • Patent number: 6137011
    Abstract: Bistrifluoromethylbenzylamines are obtained in a simple manner in high purities and with good yields by catalytic hydrogenation of the corresponding bistrifluoromethylbenzonitriles if the process is carried out in the presence of Raney cobalt, at least one aliphatic ether and ammonia.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: October 24, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Albrecht Marhold, Ernst Kysela
  • Patent number: 6031134
    Abstract: The invention relates to a novel process for the preparation of 2-amino-2-arylehanols of the formula (I) ##STR1## in which Ar represents aryl or hetaryl each unsubstituted or identically or differently monosubstituted to pentasubstituted, where as substituents there may be mentioned:halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, unsubstituted or substituted cycloalkyloxy or unsubstituted or substituted phenyl,which comprises catalytically hydrogenating .alpha.-hydroxyketoximes of the formula (II) ##STR2## in which Ar has the meaning given above,using Raney nickel or Raney cobalt in the presence of a diluent and in the presence of a base andnovel 2-amino-2-arylethanols and novel .alpha.-hydroxyketoximes.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: February 29, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Ernst Kysela, Albrecht Marhold
  • Patent number: 6022995
    Abstract: The invention relates to a novel process for the preparation of 2-amino-2-arylethanols of the formula (I) ##STR1## in which Ar represents aryl or hetaryl each unsubstituted or identically or differently monosubstituted to pentasubstituted, where as substituents there may be mentioned:halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, unsubstituted or substituted cycloalkyloxy or unsubstituted or substituted phenyl,which comprises catalytically hydrogenating .alpha.-hydroxyketoximes of the formula (II) ##STR2## in which Ar has the meaning given above,using Raney nickel or Raney cobalt in the presence of a diluent and in the presence of a base andnovel 2-amino-2-arylethanols and novel .alpha.-hydroxyketoximes.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: February 8, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Ernst Kysela, Albrecht Marhold
  • Patent number: 5925788
    Abstract: 2-Trifluoromethoxy-benzenesulphonamide, of the formula (I), ##STR1## which can be used as intermediate for the preparation of certain herbicidally active compounds is obtained in very high yield and high purity by a process in which halogenated trifluoromethoxy-benzenesulphonamides of the general formula (II) ##STR2## in which X.sup.1 represents halogen and X.sup.2 represents hydrogen or halogenare reacted with hydrogen in the presence of a catalyst and in the presence of a diluent and, if appropriate, in the presence of an acid acceptor at temperatures between 0.degree. C. and 200.degree. C. ("dehalogenated"), the resulting compound of the formula (I) is isolated in the customary manner in the event that "X.sup.2 =halogen" and converted into a pure, crystalline product by treating it with a protic polar organic liquid and isolated by removing the liquid component by means of filtration with suction in the event that "X.sup.2 =H".
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: July 20, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Albrecht Marhold, Ernst Kysela
  • Patent number: 5858922
    Abstract: The invention relates to novel fluorothiadiazolyloxyacetamides of the formula (I) ##STR1## in which R.sup.1 represents hydrogen or respectively optionally substituted alkyl, alkenyl, alkynyl or arylalkyl,R.sup.2 represents respectively optionally substituted alkyl, alkoxy, alkenyl, alkenyloxy, alkynyl, cycloalkyl, cycloalkenyl, aryl, arylalkyl or arylalkyloxy, orR.sup.1 and R.sup.2 together with the nitrogen atom that they are attached to form an optionally substituted saturated or unsaturated nitrogen heterocycle which may contain further hetero atoms and to which a benzo grouping may be fused, andR.sup.3 represents fluorothiadiazolyl,to a process and to novel intermediates for their preparation and to their use as herbicides.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: January 12, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinz Forster, Achim Bertsch, Stefan Bohm, Hans-Joachim Diehr, Ernst Kysela, Markus Dollinger, Hans-Joachim Santel
  • Patent number: 5744633
    Abstract: A new process for the production of high purity (cyclo)aliphatic diurethanes from (cyclo)aliphatic diamines, alcohols and urea in a multistep reaction in which (1) urea is reacted with alcohol with elimination of ammonia, (2) diamine is then introduced into the reaction mixture, optionally in the form of a solution in alcohol, and reacted with continuous release of ammonia and (3) the reaction mixture is freed from volatile components by distillation. The diurethanes produced by this process are useful as starting materials for the production of the corresponding diisocyanates by thermal urethane cleavage.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: April 28, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Oswald Wilmes, Eberhard Konig, Klaus Nachtkamp, Ernst Kysela
  • Patent number: 5602282
    Abstract: The invention relates to a novel process for the preparation of 2-amino-2-arylethanols of the formula (I) ##STR1## in which Ar represents aryl or hetaryl each unsubstituted or identically or differently monosubstituted to pentasubstituted, where as substituents there may be mentioned:halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, unsubstituted substituted cycloalkyloxy or unsubstituted or substituted phenyl,which comprises catalytically hydrogenating .alpha.-hydroxyketoximes of the formula (II) ##STR2## in which Ar has the meaning given above,using Raney nickel or Raney cobalt in the presence of a diluent and in the presence of a base andnovel 2-amino-2-arylethanols and novel .alpha.-hydroxyketoximes.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: February 11, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Ernst Kysela, Albrecht Marhold
  • Patent number: 5319074
    Abstract: A metal-free dyestuff of the formula ##STR1## and metal complex thereof wherein: Fb=the radical of a dyestuff selected from the group consisting of mono- or polyazo, anthraquinone, phthalocyanine, formazan, dioxazine and triphenylmethane radicals,B and B'=a direct bond or an aliphatic or aromatic bridge member to a ring C atom of an aromatic-carbocyclic ring or to a ring C or N atom or an aromatic-heterocyclic ring in Fb,X=CH.dbd.CH.sub.2 or CH.sub.2 CH.sub.2 --Y, whereinY=OSO.sub.3 H, SSO.sub.3 H, OCOCH.sub.3, OPO.sub.3 H.sub.2, OSO.sub.2 CH.sub.3, SCN, NHSO.sub.2 CH.sub.3 --, Cl, Br, F, OCOC.sub.6 H.sub.5, OSO.sub.2 --C.sub.6 H.sub.4 CH.sub.3, ##STR2## R=H or C.sub.1 -C.sub.4 -alkyl, which is optionally be substituted by halogen, hydroxy, cyano, C.sub.1 -C.sub.4 -alkoxy, carboxyl, sulpho or sulphato,Z=a fiber-reactive radical of the formula ##STR3## wherein M=H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -thioalkyl, F or CF.sub.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: June 7, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfram Reddig, Karl-Josef Herd, Ernst Kysela
  • Patent number: 5175336
    Abstract: The invention relates to new fluoromethylated polycyanobenzenes of the formula ##STR1## in which X represents hydrogen, fluorine or chlorine,m is 1 or 2 andn is (6-m),to a process for their preparation and to the salt-like alkali metal cyanide adducts of the fluoromethylated polycyanobenzenes formed as intermediates in this preparation process and to the use of the fluoromethylated polycyanobenzenes for the detection of anions.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: December 29, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunther Beck, Wolfgang von der Emden, Helmut Heitzer, Friedrich W. Krock, Ernst Kysela, Albrecht Marhold
  • Patent number: 5169427
    Abstract: Herbicidal cycloalkyl-substituted thiadiazolyloxyacetamides of the formula ##STR1## in which R.sup.1 represents hydrogen, or represents an optionally substituted radical selected from the group consisting of alkyl, alkenyl, alkynyl and aralkyl,R.sup.2 represents an optionally substituted radical selected from the group consisting of alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aralkyl, aryl, alkoxy, alkenyloxy and alkynyloxy, orR.sup.1 and R.sup.2, together with the nitrogen atom to which they are bonded, form an optionally substituted saturated or unsaturated nitrogen-heterocyclic radical, which can contain further hetero atoms and to which a benzo grouping can be fused, andR.sup.3 represents optionally substituted cycloalkyl.Intermediates of the formula ##STR2## are also new.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: December 8, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinz Forster, Hans-Joachim Diehr, Bernd Baasner, Ernst Kysela, Albrecht Marhold, Karl-Rudolf Gassen, Robert R. Schmidt
  • Patent number: 5142092
    Abstract: Fluorine-containing acetophenones, optionally halogenated on the CH.sub.3 group, of the formula ##STR1## in which X represents hydrogen, chlorine or bromine and the radicals R.sub.1 to R.sub.5 have the following meaning,a) R.sub.1 and R.sub.4 denote fluorine, R.sub.2 and R.sub.5 denote chlorine and R.sub.3 denotes CF.sub.3, orb) R.sub.1, R.sub.3 and R.sub.4 denote fluorine and R.sub.2 and R.sub.5 denote hydrogen, orc) R.sub.1, R.sub.4 and R.sub.5 denote hydrogen, R.sub.2 denotes chlorine and R.sub.3 denotes CF.sub.3, ord) R.sub.1, R.sub.4 and R.sub.5 denote hydrogen, R.sub.2 denotes chlorine and R.sub.3 denotes OCF.sub.3, ore) R.sub.1, R.sub.4 and R.sub.5 denote hydrogen and R.sub.2 and R.sub.3 denote CF.sub.3, orf) R.sub.1 denotes chlorine, R.sub.2 denotes CF.sub.3 and R.sub.3, R.sub.4 and R.sub.5 denote hydrogen, org) R.sub.1 denotes chlorine, R.sub.2, R.sub.3 and R.sub.4 denote hydrogen and R.sub.5 denotes CF.sub.3, orh) R.sub.1 denotes chlorine, R.sub.2, R.sub.4 and R.sub.5 denote hydrogen and R.sub.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: August 25, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst Kysela, Bernd Baasner, Klaus Schaller
  • Patent number: 5138056
    Abstract: The invention relates to new polycyanopyrimidines of the formula ##STR1## in which R represents chlorine or cyano,and to a process for their preparation.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: August 11, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunther Beck, Ernst Kysela
  • Patent number: 5097050
    Abstract: An oxirane of the formula ##STR1## in which Ar represents phenyl optionally substituted with from one to three halogen atoms,R represents alkyl having from 1 to 4 carbon atoms,X.sup.1 represents halogen,X.sup.2 represents hydrogen or halogen,X.sup.3 represents hydrogen or halogen,X.sup.4 represents hydrogen or halogen andn represents 0 to 1,useful as intermediates for the synthesis of fungicidal hydroxyalkinyl-azoles.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: March 17, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzcsh, Ernst Kysela, Karl H. Buchel, Stefan Dutzmann, Wilheim Brandes, Gerd Hanssler
  • Patent number: 5068343
    Abstract: 4-Substituted 5-chloro-2-hydrazinothiazoles of the formula ##STR1## in which R represents CHF.sub.2, CF.sub.3, CN or COOR.sup.1, whereR.sup.1 represents C.sub.1 -C.sub.4 -alkyl.They are useful as pesticides and as intermediates for other pesticides.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: November 26, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Beck, Ernst Kysela, Rudolf Braden
  • Patent number: 5025030
    Abstract: Novel hydroxyalkinyl-azolyl derivatives of the formula ##STR1## in which Ar represents optionally substituted aryl,R represents alkyl, optionally substituted aryl or optionally substituted aralkyl,X.sup.1 represents halogen,X.sup.2 represents hydrogen or halogen,X.sup.3 represents hydrogen or halogen,X.sup.4 represents hydrogen or halogen andn represents 0 or 1,and acid addition salts and metal salt complexes thereof, are outstandingly effective as fungicides.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: June 18, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Lantzsch, Ernst Kysela, Karl H. Buchel, Stefan Dutzmann, Wilhelm Brandes, Gerd Hanssler
  • Patent number: 4990661
    Abstract: A process for the preparation of a compound of the formula ##STR1## in which X.sup.1 and X.sup.2 each independently is chlorine or fluorine, andY is chlorine, bromine, fluorine or iodine, comprising subjecting a compound of the formula ##STR2## to a Sandmeyer or Balz-Schiemann reaction thereby to produce a carboxylic acid of the formula ##STR3## and converting the carboxylic acid (Ia) into an acyl chloride of the formula ##STR4## The compound (II) is new. The products are known intermediates for anti-bacterials.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: February 5, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Uwe Petersen, Michael Schriewer, Ernst Kysela, Klaus Grohe
  • Patent number: 4990637
    Abstract: Herbicidally active novel substituted 1-benzylsulphonyl-3-heteroaryl(thio)-ureas of the formula ##STR1## in whichQ.sub.1 represents oxygen or sulphur,R.sup.1 represents hydrogen, or represents optionally substituted radicals from the series comprising alkyl, alkenyl, alkynyl and aralkyl,R.sup.2 represents hydrogen, halogen, hydroxyl, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, halogenoalkylthio, amino, alkylamino or dialkylamino,R.sup.3 represents hydrogen or alkyl,R.sup.4 represents halogenoalkyl,X represents nitrogen or a --CH grouping,Y represents nitrogen or a --CR.sup.5 grouping,R.sup.5 represents hydrogen, halogen, cyano, alkyl, formyl, alkyl-carbonyl or alkoxy-carbonyl,Z represents nitrogen or a --CR.sup.6 grouping, andR.sup.6 represents hydrogen, halogen, hydroxyl, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, alkylamino or dialkylamino,and salts thereof with metals and basic organic nitrogen compounds. The benzylsulphonyl moieties are also new.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: February 5, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christa Fest, Klaus-Helmut Muller, Theodor Pfister, Hans-Jochem Riebel, Ernst Kysela, Hans-Joachim Santel, Robert R. Schmidt, Robert H. Strang