Synthesis of multi-functional alkenes via Wittig reaction with a new-type of phosphorus ylides
作者:Yi-Ling Tsai、Siang-en Syu、Shu-Mei Yang、Utpal Das、Yu-Shiou Fan、Chia-Jui Lee、Wenwei Lin
DOI:10.1016/j.tet.2014.06.015
日期:2014.8
A Bu3P-mediated mild and efficient synthesis of multi-functional alkenes has been described starting from substituted acrylate with aldehydes. In situ generated zwitterionic intermediates underwent proton-exchange to afford ylide intermediates, which were trapped by corresponding aldehydes providing the products in up to 92% yield with complete E-stereoselectivity. Further derivatization of the products
已经描述了Bu 3 P介导的温和而有效的多功能烯烃的合成,该合成是从用醛取代的丙烯酸酯开始的。原位生成的两性离子中间体进行质子交换,以提供叶立德中间体,该中间体被相应的醛捕获,从而以最高92%的收率提供具有完全E-立体选择性的产物。进行产物的进一步衍生化以提供功能性哒嗪酮。