Patents Represented by Attorney, Agent or Law Firm Carmella A. O'Gorman
  • Alkyl esters of 5-heterocyclic-pyridine-2,3-dicarboxylic acids
    Patent number: 5026859
    Abstract: There are provided alkyl esters of 5-heterocyclic-pyridine-2,3-dicarboxylic acids useful as intermediates for the preparation of highly effective 5-heterocyclic-2-(2-imidazolin-2-yl)pyridine herbicidal agents and methods for the preparation thereof.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: June 25, 1991
    Assignee: American Cyanamid Company
    Inventor: John M. Finn
  • 1-{[O-(cycl opropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidinyl)urea herbicidal composition and use
    Patent number: 5009699
    Abstract: This invention relates to a crop-selective, herbicidal agent 1-{[o-(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidiny l)urea, a method for the preparation thereof and a method for selectively controlling undesirable plant species in the presence of crops with the crop-selective sulfamoyl urea derivative.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: April 23, 1991
    Assignee: American Cyanamid Company
    Inventors: Thomas E. Brady, Michael E. Condon, Pierre A. Marc
  • Deacylative bromination process for the preparation of molluscicidal 2,4,5-tribromopyrrole-3-carbonitrile compounds
    Patent number: 5008403
    Abstract: There is provided a method of preparation of 2,4,5-tribromopyrrole-3-carbonitrile compounds in a single deacylative bromination step from their 2-trihaloacetylpyrrole-4-carbonitrile precursors. The 2,4,5-tribromopyrrole-3-carbonitrile compounds are useful as molluscicidal agents.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: April 16, 1991
    Assignee: American Cyanamid Company
    Inventor: Venkataraman Kameswaran
  • Macrolide compounds
    Patent number: 5001145
    Abstract: Compounds are described of formula (1) ##STR1## and salts thereof wherein R.sup.1 is a methyl, ethyl or isopropyl group;R.sup.2 represents a hydrogen atom or a group OR.sup.4 (where OR.sup.4 is a hydroxyl group or a substituted hydroxyl group having up to 25 carbon atoms) and R.sup.3 represents a hydrogen atom, or R.sup.2 and R.sup.3 together with the carbon atom to which they are attached represent >C.dbd.CH.sub.2, >C.dbd.O or >C.dbd.NOR.sup.5 (where R.sup.5 is a hydrogen atom or a C.sub.1-8 alkyl group and the group >C.dbd.NOR.sup.5 is in the E configuration).These compounds may be used for controlling insect, acarine, nematode or other pests.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: March 19, 1991
    Assignee: American Cyanamid Company
    Inventors: Michael V. J. Ramsay, Derek N. Evans, Derek R. Sutherland, Edward P. Tiley, John B. Ward, Neil Porter, Hazel M. Noble, Richard A. Fletton, David Noble
  • Method for the preparation of dialkyl dichlorosuccinates
    Patent number: 4996350
    Abstract: The present invention relates to an improved method for the preparation of dialkyl dichlorosuccinates by chlorination of a dialkyl maleate in the presence of a catalytic amount of a C.sub.1 -C.sub.4 alkyl alcohol in the absence of a solvent which are useful intermediates in the preparation of anilinofumarates. Anilinofumarates are, in turn, used in the preparation of 2-(2-imidazolin-2-yl)quinoline-3-carboxylic acid herbicidal agents.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: February 26, 1991
    Assignee: American Cyanamid Company
    Inventor: Albert A. Cevasco
  • Process for the preparation of 23-(C1-C6 alkyloxime)-LL-F28249 compounds
    Patent number: 4988824
    Abstract: There is provided a process for the preparation of 23-(C.sub.1 -C.sub.6 alkyloxime)-LL-F28249 compounds via the oxidation of crystalline 5-O-p-nitrobenzoyl-LL-F28249 compounds.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: January 29, 1991
    Inventors: Donald R. Maulding, Anil Kumar