N-tolyl-substituted oxazolidinone-containing ketone as catalyst and Oxone as oxidant via a sequential asymmetric epoxidation of benzylidenecyclopropanes, ring expansion, and Baeyer−Villiger oxidation. Up to 91% ee was obtained. Optically active cyclobutanones can also be obtained by suppressing the Baeyer−Villiger oxidation with use of more ketone catalyst and less Oxone.
本文描述了一种
γ-丁内酯的对映体选择性合成方法,该方法通过使用亚苄基
环丙烷的连续不对称环氧化,扩环和Baeyer-Villiger氧化,使用含N-
甲苯基取代的
恶唑烷酮的酮为催化剂,以Oxone为氧化剂。获得了高达91%的ee。光学活性的
环丁酮也可以通过使用更多的酮催化剂和更少的Oxone抑制Baeyer-Villiger氧化而获得。