Process for the preparation of thiochloroformates

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

1980-08-26

1982-07-20

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260455R, 549478, 549479, C07C15311, C07D33310, C07D30738

Patent

active

043407463

ABSTRACT:
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.

REFERENCES:
patent: 3277143 (1966-10-01), Tilles
patent: 3299114 (1967-01-01), Tilles
patent: 3766236 (1973-10-01), Thaler

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