P‐trisubstituted aminophosphanes react with diphenylcyclopropenone to afford an easily separable mixture of two diastereomeric α,β‐diphenyl‐β‐phosphinoyl carboxamides in good yields. X‐ray crystal structures reveal that these compounds associate into dimers, formed from two enantiomeric units linked by two bifurcated hydrogen bonds, whereby the oxygen atom of the phosphoryl group acts as a dual acceptor
一系列N,P,P-三取代的
氨基膦与
二苯基环丙烯酮反应,以高收率容易地分离出两种非对映异构体α,β-diphenyl-β-膦酰基羧酰胺的混合物。X射线晶体结构表明这些化合物缔合成二聚体,由两个对映体单元通过两个分叉的氢键连接而形成,由此
磷酰基的氧原子充当了邻位羰基的邻位NH和CH的双受体。相邻分子。在碱性溶液中非对映体膦酰基羧酰胺之间的相互转化研究表明,热力学上最稳定的异构体取决于氮原子上取代基的性质。简单的计算计算可以解释这种现象。