作者:William S. Jenks、Melanie J. Heying、Stacey A. Stoffregen、Erin M. Rockafellow
DOI:10.1021/jo802823s
日期:2009.4.3
Photolysis of derivatives of dimethylmalonate thiophene-S,C-ylide provides dicarbomethoxycarbene, which can react with thiophene to form dimethyl (2-thienyl)malonate. By generation of dicarbomethoxycarbene from the dibenzothiophene-based ylide in neat thiophene, it is shown that the thienylmalonate is not a product of rearrangement of the thiophene ylide, in contrast to thermolysis results. Formation
丙二酸二甲酯噻吩的衍生物的光解小号,Ç -ylide提供dicarbomethoxycarbene,其可与噻吩反应,以形成二甲基(2-噻吩基)丙二酸二乙酯。通过从纯噻吩中的基于二苯并噻吩的内鎓盐生成二羰甲氧基卡宾,表明与热解结果相反,噻吩基丙二酸酯不是噻吩内鎓盐重排的产物。噻吩丙二酸酯的形成通过在噻吩的2-位和5-位上的任何种类的取代和吸电子取代基的取代而被抑制。