Polycyclic phosphonic acid derivatives obtained by a [4+2] cycloaddition strategy using phosphonodienes
作者:Elise Villemin、Koen Robeyns、Raphael Robiette、Marie-France Herent、Jacqueline Marchand-Brynaert
DOI:10.1016/j.tet.2012.11.059
日期:2013.1
A practical route is described for the preparation of 1-phosphono-3(4-di)-substituted-1,3-butadienes based on the Horner–Wadsworth–Emmons (HWE) reaction. Their reactivity in the Diels–Alder (DA) reaction with three selected dienophiles is studied and compared to diethyl 1-phosphono-1,3-butadiene. A particular attention is given to the P-deprotection of cycloadducts from dibenzyl phosphonodienes. New
描述了一种基于Horner-Wadsworth-Emmons(HWE)反应制备1-膦酰基3(4-di)-取代的1,,3-丁二烯的实用方法。研究了它们与三种选定的亲二烯体在狄尔斯-阿尔德(DA)反应中的反应性,并将其与1-乙基膦酰基-1,3-丁二烯二乙基酯进行了比较。特别注意从二苄基膦酰基二烯对环加合物进行P-脱保护。使用这种HWE / DA反应序列,已经获得了新的磷酸化自行车和三轮车。