Patents by Inventor Rene Lochtman

Rene Lochtman 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).

  • PREPARATION OF 2-ALKYL-3-(4,5-DIHYDROISOXAZOL-3-YL) HALOBENZENES
    Publication number: 20030229232
    Abstract: A novel process for preparing the compounds of the formula I 1
    Type: Application
    Filed: June 18, 2003
    Publication date: December 11, 2003
    Inventors: Michael Rack, Norbert Gotz, Helmut Hagen, Wolfgang von Deyn, Ernst Baumann, Rene Lochtman, Joachim Gebhardt
  • Process and novel intermediates for preparing isoxazolin-3-ylacyl benzenes
    Publication number: 20030220505
    Abstract: The present invention describes a process for preparing isoxazoles of the formula I 1
    Type: Application
    Filed: May 14, 2003
    Publication date: November 27, 2003
    Inventors: Wolfgang von Deyn, Joachim Gebhardt, Michael Rack, Rene Lochtman, Norbert Gotz, Michael Keil, Matthias Witschel, Helmut Hagen, Ulf Misslitz, Ernst Baumann
  • Preparation of Isoxazolin-3-Ylacylbenzene
    Publication number: 20030216580
    Abstract: A process is described for preparing isoxazoles of the formula I 1
    Type: Application
    Filed: April 17, 2003
    Publication date: November 20, 2003
    Inventors: Joachim Rheinheimer, Wolfgang von Deyn, Joachim Gebhardt, Michael Rack, Rene Lochtman, Norbert Gotz, Michael Keil, Matthias Witschel, Helmut Hagen, Ulf Misslitz, Ernst Baumann
  • Preparation of isoxazolin-3-ylacylbenzenes
    Patent number: 6608209
    Abstract: A process is described for preparing isoxazoles of the formula I wherein R1 is hydrogen, C1-C6-alkyl, R2 is C1-C6-alkyl, R3, R4, R5 are hydrogen, C1-C6-alkyl, or R4 and R5 together form a bond, R6 is a heterocyclic ring, n is 0, 1 or 2; in which an intermediate of the formula VI  is prepared, followed by halogenation, thiomethylation, oxidation and acylation to give compounds of formula I. Novel intermediates for preparing the intermediates are described.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: August 19, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Rheinheimer, Wolfgang von Deyn, Joachim Gebhardt, Michael Rack, Rene Lochtman, Norbert Götz, Michael Keil, Matthias Witschel, Helmut Hagen, Ulf Misslitz, Ernst Baumann
  • Preparation of -4-thioalkybrobenzene derivatives
    Publication number: 20030149276
    Abstract: A process for preparing 4-thioalkylbromobenzene derivatives of the formula I 1
    Type: Application
    Filed: January 14, 2003
    Publication date: August 7, 2003
    Inventors: Rene Lochtman, Michael Keil, Joachim Gebhardt, Michael Rack, Wolfgang von Deyn
  • Preparation of 2-alkyl-3-(4,5-dihydroisoxazol-3-yl) halobenzenes
    Patent number: 6603017
    Abstract: A novel process for preparing the compounds of the formula I where: n is 0, 1 or 2; R1, R2 are C1-C6-alkyl; R3, R4, R5 are hydrogen or C1-C6-alkyl, or R4 and R5 together form a bond; R6 is Cl, Br, which comprises a synthesis sequence starting from 1,2-dialkylbenzenes of the formula II with subsequent halogenation to give 3,6-dihalo-1,2-dialkylbenzenes, haloalkylation to give benzyl bromides, oxidation to give benzaldehydes, oximation, reaction with alkenes to give isoxazoles, conversion into thioethers and, if appropriate, oxidation to give sulfenyl or sulfonyl derivatives of the formula I.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: August 5, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Rack, Norbert Götz, Helmut Hagen, Wolfgang von Deyn, Ernst Baumann, Rene Lochtman, Joachim Gebhardt
  • Method of producing 2-alkyl-3-(4,5-dihydroisoxazole-3-yl)-halobenzenes
    Patent number: 6548677
    Abstract: A novel process for preparing the compounds of the formula I where: n is 0, 1 or 2; R1, R2 are C1-C6-alkyl; R3, R4, R5 are hydrogen or C1-C6-alkyl, or R4 and R5 together form a bond; R6 is Cl, Br, which comprises a synthesis sequence starting from 1,2-dialkylbenzenes of the formula II with subsequent halogenation to give 3,6-dihalo-1,2-dialkylbenzenes, haloalkylation to give benzyl bromides, oxidation to give benzaldehydes, oximation, reaction with alkenes to give isoxazoles, conversion into thioethers and, if appropriate, oxidation to give sulfenyl or sulfonyl derivatives of the formula I.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 15, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Rack, Norbert Götz, Helmut Hagen, Wolfgang von Deyn, Ernst Baumann, Rene Lochtman, Joachim Gebhardt
  • Method for producing isoxazoline-3-yl-acyl benzene
    Patent number: 6525204
    Abstract: A process is described for preparing isoxazol-3-ylacylbenzenes. Also, novel intermediates for preparing isoxazol-3-ylacylbenzenes and novel processes for preparing the intermediates are described.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: February 25, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Rheinheimer, Wolfgang von Deyn, Joachim Gebhardt, Michael Rack, Rene Lochtman, Norbert Götz, Michael Keil, Matthias Witschel, Helmut Hagen, Ulf Misslitz, Ernst Baumann
  • Process and novel intermediates for preparing isoxazolin-3-ylacyl benzenes
    Publication number: 20030028033
    Abstract: The present invention describes a process for preparing isoxazoles of the formula I 1
    Type: Application
    Filed: August 19, 2002
    Publication date: February 6, 2003
    Inventors: Wolfgang von Deyn, Joachim Gebhardt, Michael Rack, Rene Lochtman, Norbert Gotz, Michael Keil, Matthias Witschel, Helmut Hagen, Ulf Miblitz, Ernst Baumann
  • Preparation of isoxazolin-3-ylacylbenzenes
    Publication number: 20030018200
    Abstract: A process is described for preparing isoxazoles of the formula I 1
    Type: Application
    Filed: June 27, 2002
    Publication date: January 23, 2003
    Inventors: Joachim Rheinheimer, Wolfgang Von Deyn, Joachim Gebhardt, Michael Rack, Rene Lochtman, Norbert Gotz, Michael Keil, Matthias Witschel, Helmut Hagen, Ulf Misslitz, Ernst Baumann
  • Preparation of 2-alkyl-3-(4,5-dihydroisoxazol-3-yl) halobenzenes
    Publication number: 20020156290
    Abstract: A novel process for preparing the compounds of the formula I 1
    Type: Application
    Filed: May 9, 2002
    Publication date: October 24, 2002
    Inventors: Michael Rack, Norbert Gotz, Helmut Hagen, Wolfgang von Deyn, Ernst Baumann, Rene Lochtman, Joachim Gebhardt
  • Method and novel intermediate products for producing isoxazolin-3-yl-acylbenzenenes
    Patent number: 6469176
    Abstract: The present invention describes a process for preparing isoxazoles of the formula I where: R1 is hydrogen, C1-C6-alkyl, R2 is hydrogen, C1-C6-alkyl, R3, R4, R5 are each hydrogen, C1-C6-alkyl or R4 and R5 together from a bond, R6 is a heterocysclic ring, n is 0, 1 or 2; which comprises preparing an intermediate of the formula VI where R1, R3, R4 and R5 are each as defined above, followed by halogenation, thiomethylation, oxidation and acylation to give compounds of the formula I. Furthermore, the invention describes novel intermediates for preparing the compounds of the formula I and novel processes for preparing the intermediates.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: October 22, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang von Deyn, Joachim Gebhardt, Michael Rack, Rene Lochtman, Norbert Götz, Michael Keil, Matthias Witschel, Helmut Hagen, Ulf Misslitz, Ernst Baumann
  • Preparation of 4-bromoaniline derivatives
    Patent number: 6388135
    Abstract: A process for preparing 4-bromoaniline derivatives of the formula I where: R1 is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, C3-C8-cycloalkyl, halogen R2 is C1-C6-alkyl, C1-C6-alkoxy, C3-C8-cycloalkyl, C2-C6-alkenyl, cyano or a heterocyclic radical is described.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: May 14, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Rene Lochtman, Michael Keil, Joachim Gebhardt, Michael Rack, Wolfgang von Deyn