Wittig Olefination Using Phosphonium Ion-Pair Reagents Incorporating an Endogenous Base
作者:Anna C. Vetter、Declan G. Gilheany、Kirill Nikitin
DOI:10.1021/acs.orglett.1c00133
日期:2021.2.19
Despite common perception, the use of strong bases in Wittig chemistry is utterly unnecessary: we report a series of novel ion-pair phosphonium carboxylate reagents which are essentially “storable ylides”. These reagents are straightforwardly prepared in excellent yields, and their fluxional nature permits clean olefination of a broad range of aldehydes and even hemiacetals.