Process for the preparation of thiochloroformates

Details Process for the preparation of thiochloroformates Process for the preparation of thiochloroformates

C - Chemistry, Metallurgy

07

D

260/467, 260/329

C07D 333/10 (2006.01) B01J 31/02 (2006.01) C07D 307/38 (2006.01)

Patent

CA 1162201

HOE 79/F 230 PROCESS FOR THE PREPARATION OF THIOCHLOROFORMATES Abstract of the disclosure: Thiochloroformates are prepared by reaction of mercaptans with phosgene in the presence of carboxylic acid amides and/or urea derivatives as catalysts in amounts smaller than hitherto known for this application. The amounts range from about 0.02 to 0.2 mol %, relative to the corresponding starting mercaptan. Despite the small amounts of catalyst the reaction proceeds as with the use of larger catalyst amounts; however, work-up is simplified and the product yields are increased in most cases.

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