Chiral Copper(II)-Catalyzed Enantioselective Boron Conjugate Additions to α,β-Unsaturated Carbonyl Compounds in Water
作者:Shū Kobayashi、Pengyu Xu、Toshimitsu Endo、Masaharu Ueno、Taku Kitanosono
DOI:10.1002/anie.201207343
日期:2012.12.14
Copper pins on the boron: The enantioselective 1,4‐addition of diboron to α,β‐unsaturated compounds proceeds smoothly in the presence of catalytic amounts of Cu(OH)2 and chiral 2,2′‐bipyridine ligand in water. A wide substrate scope of α,β‐unsaturated carbonyl compounds, including acyclic, cyclic, and β,β‐disubstituted enones, α,β‐unsaturated esters, amides, and a nitrile, has been shown.
硼上的铜销:在水中有催化量的Cu(OH)2和手性2,2'-联吡啶配体存在的情况下,对硼向α,β-不饱和化合物的1,4-对映选择性加成反应顺利进行。已显示出广泛的α,β-不饱和羰基化合物的底物范围,包括无环,环状和β,β-二取代的烯酮,α,β-不饱和酯,酰胺和腈。