Process for producing aromatic isothiocyanate derivatives

Details Process for producing aromatic isothiocyanate derivatives Process for producing aromatic isothiocyanate derivatives

C - Chemistry, Metallurgy

07

C

C07C 331/28 (2006.01) C07D 265/36 (2006.01)

Patent

CA 2124137

Abstract of the disclosure: There is disclosed a process for producing an aromatic isothiocyanate derivative of the general formula [ I ]: Image [ I ] wherein X is chlorine or -O-; when X is chlorine, Y is -O- or -S-, and Z is hydrogen, alkyl. cycloalkyl, alkenyl, alkynyl, alkoxycarbonyl, cycloalkoxycarbonyl, carboxyalkyl, alkoxycarbonylalkyl or cycloalkoxycarbonylalkyl, or when X is -O-, X and Z are taken together to form -O-CH2-CO-, and Y is -NR- wherein R is hydrogen, alkyl, cycloalkyl, alkenyl or alkynyl, which process including reacting an aromatic amine derivative of the general formula [II]: Image [ II ] wherein X, Y and Z are each as defined above, with carbon disulfide in the presence of a base in a nitrogen-containing polar solvent, and then with a chlorinated oxidizing agent

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