A process the preparation of a dithiocarboxylic esters comprises reacting a carboxylic acid compound of formula R
1
(COOH)
m
, a compound of formula R
2
AH and phosphorus pentasulfide to produce a compound of structure I. An alternate process comprises reacting a
1
compound of formula R
3
(COAH)
m
and a compound of structure II
2
in the presence of a clay catalyst; and treating products of the reaction with a thiating agent to produce a compound of structure III, a compound of structure IV, or a combination of compounds of structure III and structure IV.
3
Phosphorus Pentasulfide: A Mild and Versatile Catalyst/Reagent for the Preparation of Dithiocarboxylic Esters
作者:Arumugam Sudalai、Subbareddy Kanagasabapathy、Brian C. Benicewicz
DOI:10.1021/ol006407q
日期:2000.10.1
The reaction of carboxylic acids (1) with a variety of thiols or alcohols in the presence of phosphorus pentasulfide (P(4)S(10)) as a catalyst and reagent (20-40 mol %) proceeded effectively to afford the corresponding dithiocarboxylic esters (2) in high yields.