Acetylenic esters. Part III. Reactions of thiocarbonyl compounds with methyl propiolate, methyl methylpropiolate, and methyl phenylpropiolate
作者:G. Dallas、J. W. Lown、J. C. N. Ma
DOI:10.1039/j39680002510
日期:——
Non-terminal acetylenic esters react with many thiocarbonyl compounds to form heterocycles or 1 : 1 addition products. Propiolic esters in most cases form isomeric mixtures of dimethyl 3,3′-thiodiacrylates (I). The stereochemical course of the thiolic nucleophilic additions may be controlled for preparative purposes by changes in solvent polarity. All three stereoisomers of (I) have been prepared.