Chalcogen Or Nitrogen Attached Directly To The Ring Nitrogen Of The Five Membered Hetero Ring By Nonionic Bonding Patents (Class 548/475)
  • Process for the preparation of N-(cyclohexylthio)-phthalimide
    Patent number: 4377700
    Abstract: A process for the preparation of N-(cyclohexylthio)-phthalimide by the reaction of phthalimide with cyclohexylsulphenylchloride in the presence of a base, characterized in that an alkali or alkaline earth metal hydroxide is used as the base.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: March 22, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Wassen, Heinrich Konigshofen
  • Process for manufacturing N-arylthiocarbamoyl-2-amino-1H-isoindole-1,3-(2H)diones
    Patent number: 4339382
    Abstract: In the manufacture of N-aryl or alkylthiocarbamoyl-2-amino-1H-isoindole-1,3-(2H)diones of the type represented by the structural formula ##STR1## by ring closure of a corresponding ortho-carbonyl substituted benzoylhydrazine thiocarboxamide, greatly improved yields are obtained by cyclization of a compound of the structural formula: ##STR2## by reaction under mildly basic conditions at ambient or room temperature in the presence of a non-reactive polar organic solvent and a hindered aliphatic amine.
    Type: Grant
    Filed: February 11, 1980
    Date of Patent: July 13, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Joel L. Kirkpatrick
  • Plant growth regulating perfluoroacyl arylthioureido isoindolediones
    Patent number: 4335044
    Abstract: A novel class of compounds which are useful as plant growth regulators is disclosed, having the general structural formula: ##STR1## R.sup.1 is; C.sub.1 to C.sub.4 alkyl, nitro or halo and n is zero or an integer from 1 to 4R.sup.2 is; C.sub.1 to C.sub.4 alkyl, or benzyl, n' is zero, 1 or 2 andAr is; naphthyl, phenyl or phenyl bearing thereon from one to three of the substituents: cyano, benzyloxy, nitro, bromo, chloro, trifluoromethyl and C.sub.1 to C.sub.4 alkyl, alkenyl, alkoxy alkylthio and alkyl-substituted amino.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: June 15, 1982
    Assignee: Gulf Oil Corporation
    Inventor: Loren W. Hedrich