Cu(I)/Chiral Vanadium Complex Cooperatively Catalyzed Asymmetric Sulfonation/Rearrangement of Alkenylfurans
作者:Hongxiang Li、Qian Yang、Lei Xu、Jie Wei、Yurong Tang、Yunfei Cai
DOI:10.1021/acs.orglett.2c03304
日期:2022.11.11
The asymmetric three-component rearrangement of alkenylfurans with various sulfonyl chlorides and anilines is developed via copper(I) and chiral vanadium cooperative catalysis, providing a facile access to a broad spectrum of sulfonyl-functionalized 4-aminocyclopentenones in high yields with excellent enantio- and diastereoselectivities.
This contribution details how a continuous flow reactor was used to react carbonyl compounds with Grignardreagents at room temperature in an efficient and safe manner. Flow rate, residence time and temperature were optimized for the preparation of a small collection of secondary and tertiary alcohols. Excellent yields and general applicability were observed using the set-up protocol. The procedure
Asymmetric Ketoalkylation/Rearrangement of Alkyenlfurans via Synergistic Photoredox/Brønsted Acid Catalysis
作者:Jie Wei、Yurong Tang、Qian Yang、Hongxiang Li、Dongxian He、Yunfei Cai
DOI:10.1021/acs.orglett.2c03040
日期:2022.11.4
An enantioselective three-component rearrangement of alkenylfurans with various cycloalkyl silyl peroxides and anilines has been developed by merging photoredox catalysis with chiral Brønstedacidcatalysis. This protocol provides expedient access to a broad spectrum of ketoalkyl-functionalized 4-aminocyclopentenones in high yields with excellent enantio- and diastereoselectivities. Diverse functional