P. Hamel et M. Girard, Base-promoted in situ generation of methyl acrylate from dimethyl 3,3 '-dithiodipropionate. Application to N-alkylation of heterocycles, J ORG CHEM, 65(10), 2000, pp. 3123-3125
In basic medium, dimethyl 3,3'-dithiopropionate generates methyl acrylate,
which serves in situ as a source of propionate moiety. This property was ap
plied to the alkylation of indoles and other nitrogen heterocycles leading
to a series of 3-(heteroaryl-substituted) propionates. A mechanistic ration
ale for the generation of acrylate is presented along with supportive exper
imental data.