of cyclic anhydrides or oxidative cleavage of cyclic allyl phosphine oxides gives Ph2PO-ketoacids: reduction, separation of diastereoisomers, and completion of the Horner-Wittig reaction gives single isomers () or () of unsaturated acids.
将膦氧化物阴离子与
环酸酐衍
生物进行酰化或环
烯丙基膦氧化物的氧化裂解可得到Ph 2 PO-
酮酸:还原,分离非对映异构体以及完成霍纳-维蒂希反应,得到不饱和酸的单一异构体()或() 。