Direct Conjugate Addition of Alkynes with α,β-Unsaturated Carbonyl Compounds Catalyzed by NCN-Pincer Ru Complexes
作者:Jun-ichi Ito、Kohei Fujii、Hisao Nishiyama
DOI:10.1002/chem.201203380
日期:2013.1.7
the direct conjugate additions of α,β‐unsaturated carbonyl compounds, including ketones, esters, and amides, as well as vinylphosphonates, giving various β‐alkynyl carbonyl and phosphonate compounds. A bis(oxazolinyl)phenyl (phebox)–Ru complex also catalyzes the asymmetric conjugate addition of an alkyne with a β‐substituted, α,β‐unsaturated ketone to produce a chiral β‐alkynyl ketone.
含双(恶唑啉基)苯基配体的NCN-pincer Ru-络合物可作为α,β-不饱和羰基化合物(包括酮,酯和酰胺)以及乙烯基膦酸酯的直接共轭加成反应中的合适催化剂,生成各种β-炔基羰基和膦酸酯化合物。双(恶唑啉基)苯基(phebox)-Ru络合物还催化炔烃与β-取代的α,β-不饱和酮的不对称共轭加成反应,从而生成手性β-炔基酮。