Patents Represented by Attorney Renee M. Lett
  • Patent number: 8247570
    Abstract: Disclosed is a method for preparing a compound of Formula 1 comprising contacting a compound of Formula 2 with a metal cyanide reagent, a copper(I) salt reagent, an iodide salt reagent and at least one compound of Formula 3 wherein R1 is NHR3 or OR4; R2 is CH3 or Cl; R3 is H, C1-C4 alkyl, cyclopropyl, cyclopropylcyclopropyl, cyclopropylmethyl or methylcyclopropyl; R4 is H or C1-C4 alkyl; X is Br or Cl; and R5, R6, R7, R8 and R9 are as defined in the disclosure. Also disclosed is a method for preparing a compound of Formula 4 wherein R12, R13, R14 and Z are as defined in the disclosure, using a compound of Formula 1 characterized by preparing the compound of Formula 1 by the method disclosed above or using a compound of Formula 1 prepared by the method disclosed above.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: August 21, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Donald J. Dumas, Albert Loren Casalnuovo
  • Patent number: 8242279
    Abstract: Disclosed is a method for preparing a compound of Formula 1 comprising contacting a compound of Formula 2 with a metal cyanide reagent, a copper(I) salt reagent, an iodide salt reagent and at least one compound of Formula 3 wherein R1 is NHR3 or OR4; R2 is CH3 or Cl; R3 is H, C1-C4 alkyl, cyclopropyl, cyclopropylcyclopropyl, cyclopropylmethyl or methylcyclopropyl; R4 is H or C1-C4 alkyl; X is Br or Cl; and R5, R6, R7 and R8 are as defined in the disclosure. Also disclosed is a method for preparing a compound of Formula 4 wherein R11, R12, R13 and Z are as defined in the disclosure, using a compound of Formula 1 characterized by preparing the compound of Formula 1 by the method disclosed above or using a compound of Formula 1 prepared by the method disclosed above.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: August 14, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Donald J. Dumas
  • Patent number: 8212075
    Abstract: Disclosed is a method for preparing a compound of Formula 1 comprising contacting a compound of Formula 2 with at least one alkali metal cyanide of Formula 3 and a compound of Formula 4. wherein R1 is NHR3 or OR4; R2 is CH3 or Cl; R3 is H, C1-C4 alkyl, cyclopropyl, cyclopropylcyclopropyl, cyclopropylmethyl or methylcyclopropyl; R4 is H or C1-C4 alkyl; X is Br, Cl or I; and R5, R6, R7, R8, R9 and R10 are as defined in the disclosure. Also disclosed is a method for preparing a compound of Formula 4 wherein R9 and R10 together are a cycloalkadiene bidentate ligand, comprising contacting a compound of Formula 5 wherein Y is Cl, Br or I, with a cycloalkadiene bidentate ligand, at least one metal reducing agent and a nitrile solvent.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: July 3, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Albert Loren Casalnuovo
  • Patent number: 8049029
    Abstract: Disclosed is a method for preparing a compound of Formula 1 comprising contacting a compound of Formula 2 with a metal cyanide reagent, a copper(I) salt reagent, an iodide salt reagent and at least one compound of Formula 3 wherein R1 is NHR3 or OR4; R2 is CH3 or Cl; R3 is H, C1-C4 alkyl, cyclopropyl, cyclopropylcyclopropyl, cyclopropylmethyl or methylcyclopropyl; R4 is H or C1-C4 alkyl; Y is Br or Cl; X is NR13 or O; n is 0 or 1; and R5, R6, R7, R8, R9, R10, R11, R12 and R13 are as defined in the disclosure. Also disclosed is a method for preparing a compound of Formula 2 wherein Y is Br and R1 is NHR3 comprising introducing a gas containing bromine into a liquid containing a compound of Formula 4, and further disclosed is a method for preparing a compound of Formula 5 wherein R14, R15, R16 and Z are as defined in the disclosure using a compound of Formula 1 characterized by preparing the compound of Formula 1 by the method disclosed above.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: November 1, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Joerg Bruening, Gary David Annis, Donald J Dumas, Rafael Shapiro
  • Patent number: 8034968
    Abstract: Disclosed is a method for preparing a compound of Formula 1 comprising (1) contacting a compound of Formula 2, with (2) at least one alkali metal cyanide and (3) at least one compound of Formula 4 wherein R1 is NHR3 or OR4; R2 is CH3 or Cl; R3 is H, C1-C4 alkyl, cyclopropyl, cyclopropylcyclopropyl, cyclopropylmethyl or methylcyclopropyl; R4 is H or C1-C4 alkyl; and X is Br, Cl or I.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: October 11, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Gary David Annis
  • Patent number: 8026359
    Abstract: Disclosed are compounds of Formula 1, N-oxides, and salts thereof, wherein R1, R2, R9a, R9b, G, W, X, Y, and Z are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula 1 and methods for controlling plant disease caused by a fungal pathogen comprising applying an effective amount of a compound or a composition of the invention.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: September 27, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Yuzhong Chen