Asymmetric Bromoaminocyclization and Desymmetrization of Cyclohexa-1,4-dienes through Anion Phase-Transfer Catalysis
作者:Hai-Jiao Long、Yin-Long Li、Bing-Qian Zhang、Wen-Ying Xiao、Xiao-Ying Zhang、Ling He、Jun Deng
DOI:10.1021/acs.orglett.1c02817
日期:2021.11.5
The catalytic enantioselective desymmetrizing bromoaminocyclization of prochiral cyclohexa-1,4-dienes has been achieved by using chiral anion phase-transfer catalysis, providing a range of enantioenriched cis-3a-arylhydroindoles bearing an all-carbon quaternary stereocenter in good yields (up to 78%) and excellent enantioselectivities (up to 97% ee). Furthermore, the potential application of this methodology
通过使用手性阴离子相转移催化实现了前手性 cyclohexa-1,4-二烯的催化对映选择性去对称溴氨基环化,以良好的收率(高达 78 %) 和出色的对映选择性(高达 97% ee)。此外,(+)-Mesembrane 的不对称合成证明了该方法在天然产物全合成中的潜在应用。