Organocatalytic Asymmetric Morita–Baylis–Hillman Reaction of Isatins with Vinyl Sulfones
Hong‐Jiao He, Ruiqi Wang, Lin‐Xi Wan, Liyan Zhou, Hongyan Li, Guo‐Bo Li, You‐Cai Xiao, Fen‐Er Chen
Abstract
The organocatalytic asymmetric Morita-Baylis-Hillman (MBH) reaction of isatin derivatives with various vinyl sulfones is disclosed. Chiral sulfone-containing 3-hydroxyoxindoles were produced in good to high yields and with good to high ee's. This report displays an unprecedented example to apply activated alkenes with sulfone moiety other than carbonyl groups in asymmetric MBH reactions and provides an efficient strategy to incorporate the sulfone functional group for the synthesis of chiral 3-hydroxyoxindoles.
Topics & Concepts
SulfoneIsatinBaylis–Hillman reactionMoietyOrganocatalysisEnantioselective synthesisChemistryOrganic chemistryCatalysisSulfur-Based Synthesis TechniquesOrganic and Inorganic Chemical ReactionsAsymmetric Synthesis and Catalysis