The highly chemoselective transfer hydrogenation of the carbon–carbon double bond of conjugated nitroalkenes by a rhodium complex
作者:Jing Xiang、Er-Xiao Sun、Chun-Xia Lian、Wei-Cheng Yuan、Jin Zhu、Qiwei Wang、Jingen Deng
DOI:10.1016/j.tet.2012.04.028
日期:2012.6
Chemoselective transfer hydrogenation of conjugated nitroalkenes catalyzed by [RhCl2Cp∗]2–diamine complex (Cp∗=η5-C5Me5) using HCOOH/Et3N (5:2) (TEAF) as a hydrogen source was realized. A variety of nitrostyrenes, β-methyl nitrostyrenes, and 3-methyl-4-nitro-5-alkenyl-isoxazoles were reduced smoothly in good to excellent yields in short reaction time. Other functional groups are inert under the reaction
通过[催化的RhCl缀合的硝基烯烃化学选择性转移氢化2的Cp * ] 2 -二胺复合物(CP * =η 5 -C 5我5)使用HCOOH / ET 3 N(5:2)(TEAF)作为氢源,实现。各种硝基苯乙烯,β-甲基硝基苯乙烯和3-甲基-4-硝基-5-链烯基-异恶唑均能在短时间内以良好或极好的收率顺利还原。在反应条件下,其他官能团是惰性的。