New Synthetic Technology for the Mild and Selective One-Carbon Homologation of Hindered Aldehydes in the Presence of Ketones
作者:K. C. Nicolaou、Georgios Vassilikogiannakis、Remo Kranich、Phil S. Baran、Yong-Li Zhong、Swaminathan Natarajan
DOI:10.1021/ol000102u
日期:2000.6.1
efficient method has been uncovered during the total synthesis of the CP molecules to accomplish the one-carbon homologation of sterically hindered aldehydes in the presence of acid- and base-labile moieties, Michael acceptors, and even other carbonyl groups such as reactive and epimerizable ketones. Mechanistic studies have revealed a neutral reagent for the rapid collapse of cyanohydrins to ketones.