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手性环状P2N4-型配体/钴簇合物催化芳香酮的不对称氢化反应
Authors
李岩云
王哲
高景星
Publication date
30 July 2019
Publisher
Abstract
近年来,设计开发新型高效的手性非贵金属催化剂已引起了人们的广泛关注。本研究从廉价易得的钴络合物出发,将其与新型手性胺膦配体原位形成的催化体系用于芳香酮的不对称氢化反应中,并考察了温度、氢气压力、添加剂用量等对催化反应的影响。结果表明,以氢气作为氢源,KOH存在的条件下,手性环状P2N4-型配体L5与钴簇合物Co4(CO)12原位形成的体系能有效催化多种芳香酮的不对称氢化反应,获得较高的转化率,相应产物手芳香醇的对映选择性最高可达90% ee(enantiomeric excess,对映体过量)
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Last time updated on 20/11/2020