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Hydroformylation of olefins catalyzed by chiral phosphite-Rh(I) complexes

机译:手性亚磷酸酯-Rh(I)配合物催化的烯烃加氢甲酰化

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摘要

A series of chiral phosphite ligands based on chiral binaphthol have been designed and synthesized. Their Rhodium(I) complexes were found to be efficient catalysts for the asymmetric hydroformylation of styrene and vinyl acetate and showed excellentcatalytic activities and chemoselectivities as well as good regioselectivities (branched aldehyde/linear aldehyde). The enantioselectivities up to 37.0 percent ee and 38.1 percent ee were achieved in the hydroformylation of styrene and vinyl acetate respectively. The chiral dentate phosphite ligands provided better enantioselectivities, however lower regioselectivities than the chiral mono-dentate phosphite ligand.
机译:设计并合成了一系列基于手性联萘酚的手性亚磷酸酯配体。发现它们的铑(I)络合物是苯乙烯和乙酸乙烯酯不对称加氢甲酰化反应的有效催化剂,并显示出优异的催化活性和化学选择性以及良好的区域选择性(支化醛/线性醛)。在苯乙烯和乙酸乙烯酯的加氢甲酰化反应中,对映选择性分别达到37.0%ee和38.1%ee。手性亚齿状亚磷酸酯配体提供了更好的对映选择性,但是与手性亚齿状亚磷酸酯配体相比,区域选择性较低。

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