Organocatalytic Asymmetric Synthesis of Bridged Tetrahydrobenzo[<i>b</i>]azepines/oxepines
作者:Jiaming Zou、Lei Xu、Yurong Tang、Wentao Wang、Yunfei Cai
DOI:10.1021/acs.orglett.2c02833
日期:2022.10.7
The asymmetricsynthesis of bridged tetrahydrobenzo[b]azepine and oxepine derivatives through chiral Brønsted acid catalyzed asymmetric aza-Piancatelli rearrangement/Michael addition sequence has been developed. The reaction proceeds under mild reaction conditions to afford the final bridged cyclic products in good yields with excellent enantio- and diastereoselectivities.