Direct Conjugate Addition of Alkynes with alpha,beta-Unsaturated Carbonyl Compounds Catalyzed by NCN-Pincer Ru Complexes

[摘要]：NCN-pincer Ru-complexes containing bis(oxazolinyl) phenyl ligands serve as suitable catalysts in the direct conjugate additions of alpha,beta-unsaturated carbonyl compounds, including ketones, esters, and amides, as well as vinylphosphonates, giving various beta-alkynyl carbonyl and phosphonate compounds. A bis(oxazolinyl) phenyl (phebox)-Ru complex also catalyzes the asymmetric conjugate addition of an alkyne with a beta-substituted, alpha,beta-unsaturated ketone to produce a chiral beta-alkynyl ketone.

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