title: Phosphine-catalyzed asymmetric [4+1] annulation of activated α,β-unsaturated ketones with Morita-Baylis-Hillman carbonates: enantioselective synthesis of spirooxindoles containing two adjacent quaternary stereocenters.
abstract: The asymmetric [4+1] annulation of activated α,β-unsaturated ketones with MBH carbonates catalyzed by bifunctional thiourea-phosphine catalysts derived from an axially chiral binaphthyl scaffold has been developed, giving spirooxindoles with two adjacent quaternary stereocenters in good yields with high enantioselectivities and moderate diastereoselectivities under mild conditions.
authors: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, P. R. China. mshi@mail.sioc.ac.cn.
authors: Fang-Le
authors: FL
authors: Hu
authors: Yin
authors: Y
authors: Wei
authors: Min
authors: M
authors: Shi