The scope of the asymmetric silyl transfer to unsaturated lactones utilising a C2-symmetric NHCâCu(I) catalyst has been established and kinetic resolutions mediated by silyl transfer have been used to prepare enantiomerically enriched anti-4,5-disubstituted 5-membered lactones. The method has been exploited in an expedient synthesis of (+)-blastmycinone.
利用 C2 对称 NHCâCu(I) 催化剂对不饱和内酯进行不对称
硅基转移的范围已经确定,并利用
硅基转移介导的动力学解析制备了对映体富集的反 4,5 二取代 5 元内酯。该方法已被用于 (+)-blastmycinone 的快速合成。