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DOI: 10.1055/s-2007-965943
A General, Facile, and Safe Procedure for the Preparation of S-Methyl N-Alkylthiocarbamates by Methylthiocarbonylation of Primary Aliphatic Amines with S,S-Dimethyl Dithiocarbonate
Publikationsverlauf
Publikationsdatum:
20. Februar 2007 (online)

Abstract
A general procedure is reported for the selective preparation of S-methyl N-alkylthiocarbamates by methylthiocarbonylation of primary aliphatic amines, employing S,S-dimethyl dithiocarbonate as a phosgene substitute. The reactions are carried out in water at room temperature (20-25 °C), with S,S-dimethyl dithiocarbonate/amine ratios varying between 1:1.2 and 1:2, and with quantitative recovery of the excess amine. The target products are obtained in exceptionally high yields (generally >95%) and with very high purity (generally >99.5%). Also to be noted is the complete chemoselectivity of the reactions, which can be carried out in the presence of hydroxy or aminophenyl groups.
Key words
thiocarbamates - thiocarbonylation - dithiocarbonates - amines - chemoselectivity
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References
Professor Emeritus, University of Turin (Italy).
17Oxon Italia S.p.A. (Italy).