Reactions of phosphines with acetylenes. Part XIII. Ring expansion of dibenzophosph(III)ole derivatives to give dihydrodibenzophosphorin oxides
作者:Eileen M. Richards、John C. Tebby
DOI:10.1039/j39710001064
日期:——
A series of dibenzophosphorin oxides has been prepared by ring expansion of dibenzophosph(III)oles with methyl propiolate. The structures of the oxides have been confirmed by independent synthesis. Ring expansion occurs to a considerable extent even when the phosphorus atom bears a benzyl group. The n.m.r. spectra of dibenzophosphorin oxides are discussed.
通过使二苯并膦(III)环与丙酸甲酯环扩环,制备了一系列二苯并膦氧化物。氧化物的结构已通过独立合成得到证实。即使在磷原子带有苄基的情况下,环的扩展也会在相当大的程度上发生。讨论了二苯并膦氧化物的核磁共振光谱。