<i>S,C</i>-Sulfonium Ylides from Thiophenes: Potential Carbene Precursors
作者:Stacey A. Stoffregen、Melanie Heying、William S. Jenks
DOI:10.1021/ja076351w
日期:2007.12.1
Photolysis of S,C-sulfonium ylides derived from thioanisol, thiophene, benzothiophene, or dibenzothiophene provides products deriving from dicarbomethoxycarbene. In methanol, no rearrangement of the carbene to the ketene derivative is observed. Formation of dibenzothiophene and benzothiophene is quantitative. For the thiophene-based ylide, insertion of the carbene into the alpha-CH bond of thiophene