Patents by Inventor Hans-Joachim Diehr

Hans-Joachim Diehr 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: 5912354
    Abstract: The present invention is related to an improved process for the commercial preparation of substituted aminotriazolinones, which are known intermediates in the preparation of herbicidal active compounds. In particular, this invention relates to the preparation of 4-amino-1,2,4-triazolin-5-ones, and more particularly to the preparation of 3-isopropyl-4-aminotriazolinone. The process of the invention includes reacting an oxadiazolinone with hydrazine hydrate in the absence of a solvent. In a preferred embodiment, the hydrazine hydrate is mixed with a basic compound, preferably aqueous sodium hydroxide.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: June 15, 1999
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Vijay C. Desai, Klaus Jelich, Hans Joachim Diehr, Reinhard Lantzsch
  • 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: 5780392
    Abstract: This invention concerns heterocyclyl-1,3,4-thiadiazolyloxycetamides of the formula ##STR1## in which R.sup.1 is hydrogen or optionally substituted alkyl, alkenyl, alkinyl or aralkyl, R.sup.2 is optionally substituted alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkenyl, aralkyl, aryl, alkoxy, alkenyloxy or alkinyloxy or R.sup.1 and R.sup.2, together with the nitrogen atom to which they are bound, form an optionally substituted, saturated or unsaturated nitrogen heterocycle which may contain other hetero-atoms and to which a benzo-grouping can be fused, and Het is an optionally substituted heterocyclyl group with the exception of thienyl. The Invention also concerns a method of preparing such compounds, intermediates used in their preparation and the use of such compounds as herbicides.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: July 14, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinz Forster, Hans-Joachim Diehr, Hans-Joachim Santel, Markus Dollinger
  • Patent number: 5756752
    Abstract: Substituted oxadiazolones of the formula (I) ##STR1## in which R represents optionally substituted alkyl, are obtained in good yields and high purity on reacting in a first step carboxylic acids of the general formula (II)R--COOH (II)with hydrazine hydrate in the presence of a catalyst and an inert diluent at temperatures between 0.degree. C. and 150.degree. C. with elimination of water and removal of said catalyst and reacting the resulting carboxylic hydrazides of the general formula (III)R--CO--NH--NH.sub.2 (III)in a second step with phosgene (COCl.sub.2) at temperatures between 20.degree. C. and 120.degree. C.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: May 26, 1998
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Hans Joachim Diehr, Reinhard Lantzsch, Jacqueline M. Applegate, Klaus Jelich
  • Patent number: 5739349
    Abstract: The invention relates to a new process and new intermediates for the preparation of triazolinones of the general formula (I) ##STR1## in which R.sup.1 represents in each case optionally substituted alkyl or cycloalkyl andR.sup.2 represents amino or in each case optionally substituted alkyl, alkenyl, alkinyl, alkoxy, alkylamino, dialkylamino, cycloalkyl, cycloalkylalkyl or phenyl, and to new intermediates for the preparation of triazolinones, many of which are known and which can be used as intermediates for the preparation of herbicides and insecticides.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: April 14, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Linker, Wilhelm Haas, Kurt Findeisen, Hans-Joachim Diehr
  • Patent number: 5708184
    Abstract: The invention relates to a new process for the preparation of substituted amino-carbonyltriazolinones of the general formula (I) ##STR1## in which R.sup.1 and R.sup.2 have the meanings given in the description.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: January 13, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hans-Joachim Diehr
  • Patent number: 5693821
    Abstract: The invention relates to a new process for the preparation of substituted aminotriazolinones of the general formula (I) ##STR1## in which R has the meanings mentioned in the description.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: December 2, 1997
    Assignee: Bayer Aktiengesellshcaft
    Inventors: Hans-Joachim Diehr, Klaus-Helmut Muller, Reinhard Lantzsch
  • Patent number: 5639891
    Abstract: The invention relates to a new process and new intermediates for the preparation of triazolinones of the general formula (I) ##STR1## in which R.sup.1 represents in each case optionally substituted alkyl or cycloalkyl andR.sup.2 represents amino or in each case optionally substituted alkyl, alkenyl, alkinyl, alkoxy, alkylamino, dialkylamino, cycloalkyl, cycloalkylalkyl or phenyl, and to new intermediates for the preparation of triazolinones, many of which are known and which can be used as intermediates for the preparation of herbicides and insecticides.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: June 17, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Linker, Wilhelm Haas, Kurt Findeisen, Hans-Joachim Diehr
  • Patent number: 5475115
    Abstract: The invention relates to a new process and new intermediates for the preparation of triazolinones of the general formula (I) ##STR1## in which R.sup.1 represents in each case optionally substituted alkyl or cycloalkyl andR.sup.2 represents amino or in each case optionally substituted alkyl, alkenyl, alkinyl, alkoxy, alkylamino, dialkylamino, cycloalkyl, cycloalkylalkyl or phenyl, and to new intermediates for the preparation of triazolinones, many of which are known and which can be used as intermediates for the preparation of herbicides and insecticides.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: December 12, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Linker, Wilhelm Haas, Kurt Findeisen, Hans-Joachim Diehr
  • Patent number: 5453506
    Abstract: Process for the preparation of 2-chloro-5-aminomethylpyridine of the formula (I) ##STR1## by a reaction of 2-chloro-5-cyano-pyridine of the formula (II) ##STR2## with hydrogen in the presence of ammonia and in the presence of an anhydrous metal catalyst, characterized in that the reaction is carried out in an apolar aprotic diluent at temperatures between 20.degree. C. and 150.degree. C.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: September 26, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hans-Joachim Diehr
  • Patent number: 5442072
    Abstract: The invention relates to a novel process for preparing chloromethylpyridines of the general formula (I) ##STR1## in which n represents the numbers 0,1,2 or 3 andX represents halogen,by reacting aminomethylpyridines of the general formula (II) ##STR2## with a nitrosating or diazotizing agent in the presence of a diluent and optionally in the presence of hydrogen chloride at temperatures between -20.degree. C. and +50.degree. C. and then working up in a conventional manner.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: August 15, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Kraus, Hans Lindel, Hans-Joachim Diehr
  • Patent number: 5434267
    Abstract: Process for the preparation of compounds of the formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3, X and n have the meaning given in the description, by reacting acetates with carbon monoxide in the presence of a basic auxiliary, followed by alkylation. The products are intermediates for fungicidal acrylates.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: July 18, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Kraus, Alexander Klausener, Hans-Joachim Diehr
  • Patent number: 5382671
    Abstract: The invention relates to a new process for the preparation of 2-chloro-5-alkylaminomethyl-pyridines of the formula (I) ##STR1## in which R represents alkyl. In this process, 2-chloro-5-aminomethyl-pyridine is reacted with formic acid at temperatures between 20.degree. C. and 200.degree. C., if appropriate in the presence of a diluent, the 2-chloro-5-formylaminomethyl-pyridine which has been formed in this process is reacted without intermediate isolation (in situ) with alkylating agents at temperatures between 0.degree. C. and 100.degree. C., if appropriate in the presence of an acid acceptor, if appropriate in the presence of a diluent, and, finally, the 2-chloro-5-(N-alkyl-N-formyl-aminomethyl)-pyridines thus formed of the general formula (V) ##STR2## in which R has the abovementioned meaning,are reacted with aqueous alkali metal hydroxide solution at temperatures between 20.degree. C. and reflux temperature, if appropriate after volatile components have been distilled off.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: January 17, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hans-Joachim Diehr
  • Patent number: 5177090
    Abstract: The invention relates to the use of 2,5-substituted 1,3,4-thiadiazoles of the formula ##STR1## in which R.sup.1 stands for straight-chain or branched halogenoalkyl,R.sup.2 stands for straight-chain or branched alkyl andn stands for the numbers 1 or 2,as microbicides for protecting industrial materials.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: January 5, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Joachim Diehr, Karl-Heinz Kuck, Wilfried Paulus, Hans-Georg Schmitt
  • 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: 5166165
    Abstract: Use of compounds of the formula (I) ##STR1## in which Ar, R and X have the meaning indicated in the description, for combating phytopathogenic fungi in agriculture.The compounds of the formula (I), are known and can be prepared by analogous processes, for example by oxidizing the corresponding thio compounds, for example using potassium permanganate.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: November 24, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerd Kleefeld, Hans-Joachim Diehr, Wilhelm Haas, Heinz-Wilhelm Dehne, Wilhelm Brandes
  • Patent number: 5164508
    Abstract: The present invention relates to a new process for the preparation of N-(2-chloro-pyridin-5-yl-methyl)-ethylene-diamine of the formula (I) ##STR1## in a technically simple manner in high yield and in very good quality. The new process is characterized in that N-(2-chloro-pyridin-5-yl-methyl)-aminoacetonitrile of the formula (II) ##STR2## is reacted with hydrogen in the presence of ammonia and in the presence of a catalyst and also in the presence of a diluent, at temperatures between 0.degree. C. and 100.degree. C. and a pressure between 1 bar and 100 bar.N-(2-Chloro-pyridin-5-yl-methyl)-ethylenediamine (I) can be used as an intermediate for the preparation of insecticides.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: November 17, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hans-Joachim Diehr
  • Patent number: 5162539
    Abstract: A process for the preparation of a 2-alkylthio-1,3,4-thiadiazole of the formula ##STR1## in which R.sup.1 represents alkyl which is optionally substituted by halogen andR.sup.2 represents alkyl or aralkyl,which comprises reacting a carboxylic acid of the formulaR.sup.1 --COOH (II),with a dithiocarbazic ester of the formula ##STR2## in the presence of phosphoryl chloride (POCl.sub.3) at a temperature between -20.degree. C. and +120.degree. C.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: November 10, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventor: Hans-Joachim Diehr
  • Patent number: 5147443
    Abstract: The invention relates to the use of 2,5-substituted 1,3,4-thiadiazoles of the formula ##STR1## in which R.sup.1 stands for straight-chain or branched halogenoalkyl,R.sup.2 stands for straight-chain or branched alkyl andn stands for the numbers 1 or 2,as microbicides for protecting industrial materials.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: September 15, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Joachim Diehr, Karl-Heinz Kuck, Wilfried Paulus, Hans-Georg Schmitt
  • Patent number: 5101034
    Abstract: A process for the preparation of a heteroaryloxyacetamide of the formula ##STR1## in which R is a 5 membered heterocycle which may be benzo-fused, andR.sup.1 and R.sup.2 each independently is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl or cycloalkenyl, halogenoalkyl, alkoxyalkyl, alkoxy, aralkyl or aryl, orR.sup.1 and R.sup.2, together with the nitrogen atom to which they are bonded, form a heterocycle,which comprises reacting a sulphonylated heteroaromatic of the formulaR--SO.sub.2 --R'in whichR' is lower alkyl or benzyl,with an .alpha.-oxyacetamide of the formula ##STR2## in which R" is hydrogen or acyl,in the presence of an inorganic base as an acid acceptor and of solvent as a diluent at a temperature of about -50.degree. C. to +150.degree. C. The products are known herbicides.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: March 31, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Schmidt, Hans-Joachim Diehr