Quinine-derived thiourea promoted enantioselective Michael addition reactions of 3-substituted phthalides to maleimides
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DOI: 10.1007/s11426-018-9393-2
Abstract: A highly diastereoselective and enantioselective Michael addition/desymmetrization reaction of maleimides with prochiral 3- substituted phthalides catalyzed by quinine-derived bifunctional thiourea was realized. A broad range of the 3,3′-disubstituted phthalides bearing vicinal quaternary-tertiary stereogenic centers were… read more here.
Keywords: quinine derived; michael addition; enantioselective michael; substituted phthalides ... See more keywords
A AgOAc/quinine-derived aminophosphine complex as an efficient catalyst for diastereo- and enantioselective 1,3-dipolar cycloaddition of α,β-unsaturated 7-azaindoline amides and azomethine ylides
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DOI: 10.1039/c9qo00347a
Abstract: The Dixon’s catalyst system is effective for the asymmetric 1,3-dipolar cycloaddition. read more here.
Keywords: quinine derived; dipolar cycloaddition; catalyst; agoac quinine ... See more keywords