Synthesis of cycloheptenyldiphenylphosphine oxides from the reactions of a cyclic phosphonium salt with α,β-unsaturated carbonyl compounds
作者:Tetsuya Fujimoto、Yukiharu Takeuchi、Koh-Ichi Kai、Yukihiko Hotei、Kazuchika Ohta、Iwao Yamamoto
DOI:10.1039/c39920001263
日期:——
The reactions of the ylide from the five-membered cyclic phosphonium salt 1 with methyl vinyl ketone, chalcone, and benzylidene acetone afforded cycloheptenyldiphenylphosphine oxides via a Michael-type reaction followed by an intramolecular Wittig reaction.
五元环状膦盐 1 的桎梏与甲基乙烯酮、查尔酮和亚苄基丙酮反应,通过迈克尔式反应和分子内维蒂希反应生成环庚烯二苯基膦氧化物。