Process for the manufacture of thiochlorformates

Details Process for the manufacture of thiochlorformates Process for the manufacture of thiochlorformates

1981-11-27

1983-08-23

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C15400

Patent

active

044003293

ABSTRACT:
According to the invention, phosgene is reacted with a mercaptan in the presence of a catalyst of the general formula: ##STR1## in which X=O or S and in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are, in particular, aliphatic, cycloaliphatic or aromatic groups or a hydrogen atom. The proportion of catalyst is 0.1 to 10 mol %, relative to the mercaptan, and the reaction is carried out at ambient temperature and at atmospheric pressure. The process, which can be made continuous, results in short residence times and in a high yield and a high purity.
Thiochloroformates are applied essentially as intermediates for the synthesis of herbicidal compounds.

REFERENCES:
patent: 4320070 (1982-03-01), Cook, Jr. et al.

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