Catalytic Asymmetric Henry Reaction of Nitroalkanes and Aldehydes Catalyzed by a Chiral <i>N</i>,<i>N</i>′<i>-</i>Dioxide/Cu(I) Complex
作者:Hongjiang Mei、Xiao Xiao、Xiaohu Zhao、Bing Fang、Xiaohua Liu、Lili Lin、Xiaoming Feng
DOI:10.1021/jo5027832
日期:2015.2.20
An easily available N,N′-dioxide/Cu(I) complex has been developed for the catalytic asymmetric nitroaldol (Henry) reaction of aldehydes with nitroethane. Under mild reaction conditions, a series of substituted aromatic, heteroaromatic and α,β-unsaturated aldehydes are transformed to the corresponding anti-β-nitroalcohols in good to excellent yields (up to 99%) with moderate to good dr (up to 16.7:1
已开发出一种易于获得的N,N'-二氧化物/ Cu(I)络合物,用于醛与硝基乙烷的催化不对称硝基醛醇(Henry)反应。下温和的反应条件下,一系列的取代的芳族,杂芳族和α,β -不饱和醛转化为相应的抗-β-硝基醇以良好至优异的产率(高达99%)的中度至良好博士(高达1670: 1 anti / syn)和高ee值(高达97%)。除硝基乙烷外,还使用硝基甲烷和1-硝基丙烷作为亲核试剂,并获得了良好的对映选择性。