Influence of solvent and substituents on the reaction of N-alkylthioacetamides with dimethyl acetylenedicarboxylate: synthesis of functionalized thiophenes containing an exocyclic double bond
作者:Konstantin L. Obydennov、Elena L. Klimareva、Marya F. Kosterina、Pavel A. Slepukhin、Yury Yu. Morzherin
DOI:10.1016/j.tetlet.2013.06.127
日期:2013.9
The reaction of thioacetamides with dimethylacetylenedicarboxylate affords 3-oxothien-2-ylidene or 4-oxothiazol-2,5-ylidene derivatives based on the structure of the thioacetamides and the solvent employed. The structural features of the 3-oxothien-2-ylidenes are discussed.