Enantioselective Synthesis of Alkyl-substituted Eight-membered Lactones by Claisen Rearrangement
作者:Justin R. Harrison、Andrew B. Holmes、Ian Collins
DOI:10.1055/s-1999-3099
日期:——
The Claisen rearrangement of alkenyl-substituted ketene acetals (produced in situ by selenoxide elimination from the corresponding phenylselenoacetaldehyde-derived acetals of enantiomerically pure 1,3-diol derivatives) afforded unsaturated eight-membered lactones with control of stereochemistry of methyl substituents at C-4, C-5 and C-7, as well as a fused system.
烯基取代的乙酮的克莱森重排(从对映体纯度为 1,3 二醇衍生物的相应苯基硒乙醛衍生的乙醛中通过硒氧化消除原位生成)得到了不饱和的八元内酯,其 C-4、C-5 和 C-7 甲基取代基的立体化学受到控制,还得到了一个融合体系。