Patent ID: 8933260
Filing Date: 2015-01-13
Classification: C07C

Abstract:
1. A process for the preparation of an alkoxycarbonyl isothiocyanate of the formula wherein R represents C which comprises contacting a salt of thiocyanate ( − SCN) with an alkyl chloroformate in toluene solvent in the presence of a) from about 0.01 to about 1.00 molar equivalents of water and b) from about 0.01 to about 1.00 molar equivalents of a catalyst comprising a six-membered mononuclear or ten-membered fused polynuclear aromatic, heterocyclic compound having 1 or 2 nitrogen atoms as the only heteroatoms in the ring, at a temperature from about 0° C. to about 110° C., wherein the alkyl chloroformate has the following formula: