Dinuclear Zinc-Catalyzed Asymmetric Tandem Reaction of α-Hydroxy-1-indanone: Access to Spiro[1-indanone-5,2′-γ-butyrolactones]
作者:Meng-Meng Liu、Xiao-Chao Yang、Yuan-Zhao Hua、Jun-Biao Chang、Min-Can Wang
DOI:10.1021/acs.orglett.9b02658
日期:2019.9.6
A highly efficient method for the enantioselective build of spiro[1-indanone-5,2'-γ-butyrolactones] has been developed through the tandem Michael/transesterification reaction of α-hydroxy-1-indanone and α,β-unsaturated esters. A broad range of spiro(1-indanone-butyrolacones) with contiguous stereocenters have been synthesized with excellent stereoselectivities (up to >20:1 dr, up to >99% ee) under
通过α-羟基-1-茚满酮与α,β-不饱和酯的串联迈克尔/酯交换反应,开发了一种高效的螺环[1-茚满酮-5,2'-γ-丁内酯]对映选择性构建方法。在双核锌络合物的催化下,已合成出具有连续立体中心的多种螺(1-茚满酮-丁酮),具有出色的立体选择性(高达> 20:1 dr,高达> 99%ee)。而且,该反应可以以克规模进行,而不会影响其立体选择性。提出了一种可能的机制。