作者:Yong Wang、Xinyi Cao、Leyao Zhao、Chao Pi、Jingfei Ji、Xiuling Cui、Yangjie Wu
DOI:10.1002/adsc.202000759
日期:2020.10.6
A generalized, simple and efficient transfer hydrogenation of unsaturated bonds has been developed using HBPin and various proton reagents as hydrogen sources. The substrates, including alkenes, alkynes, aromatic heterocycles, aldehydes, ketones, imines, azo, nitro, epoxy and nitrile compounds, are all applied to this catalytic system. Various groups, which cannot survive under the Pd/C/H2 combination
使用HBPin和各种质子试剂作为氢源,已经开发了一种普遍,简单而有效的不饱和键转移加氢方法。包括烯烃,炔烃,芳族杂环,醛,酮,亚胺,偶氮,硝基,环氧和腈化合物在内的所有底物均应用于该催化体系。可以容忍在Pd / C / H 2组合下无法生存的各种基团。研究了反应物的活性,其变化趋势为:苯乙烯>二苯基甲亚胺>苯甲醛>偶氮苯>硝基苯>喹啉>苯乙酮>苄腈。还研究了带有两个或多个不同不饱和键的底物,并以优异的化学选择性发生了转移氢化。由Pd(OAc)2和HBPin生成的二氧化钛极大地提高了TH效率。此外,使用D 2 O和HBPin通过原位HD生成和区分,实现了末端芳族烯烃的化学选择性抗Markovnikov加氢氘。