Addition of kinetic boron enolates generated from β-alkoxy methyl ketones to aldehydes. Density functional theory calculations on the transition structures
作者:Luiz C. Dias、Sávio M. Pinheiro、Vanda M. de Oliveira、Marco A.B. Ferreira、Cláudio F. Tormena、Andrea M. Aguilar、Julio Zukerman-Schpector、Edward R.T. Tiekink
DOI:10.1016/j.tet.2009.08.042
日期:2009.10
of 1,5-anti stereoinduction are obtained in boron enolate aldol reactions of 1,2-syn β-alkoxy methyl ketones with achiral aldehydes, when the β-alkoxy protecting group is part of a benzylidene acetal. We have also investigated the effects of the ligands on boron, the α-, β-, and γ-substituents and the β-alkoxy protecting group on the boron enolates, using density functional theory (B3LYP) and Møller–Plesset
本文中我们报道,当β-烷氧基保护基为亚苄基乙缩醛的一部分时,在1,2-顺式β-烷氧基甲基酮与非手性醛的硼烯醇盐醛醇缩醛反应中获得了良好至优异水平的1,5-抗立体诱导。。我们还使用密度泛函理论(B3LYP)和Møller-Plesset微扰理论(MP2)研究了配体对硼,烯丙基硼化物上的α-,β-和γ-取代基以及β-烷氧基保护基的影响)计算。