La. Eskova et al., INTERACTION OF 1-VINYLPYRAZOLES WITH ALKANETHIOLS, Bulletin of the Russian Academy of Sciences, Division of Chemical Sciences, 41(8), 1992, pp. 1462-1465
It was found that vinylpyrazoles react with thiols both according to i
onic and according to free-radical mechanisms, with the formation of p
roducts of alpha- and beta-addition. Radical thiylation of 1-vinylpyra
zoles is a convenient method of synthesis of pyrazoles with sulfur-con
taining substituents.