Methanol as hydrogen source: Chemoselective transfer hydrogenation of α,β-unsaturated ketones with a rhodacycle
作者:Ahmed H. Aboo、Robina Begum、Liangliang Zhao、Zahoor H. Farooqi、Jianliang Xiao
DOI:10.1016/s1872-2067(19)63367-x
日期:2019.11
economic and easy-to-handle hydrogen source. It has rarely been used in transfer hydrogenation reactions, however. We herein report that a cyclometalated rhodium complex, rhodacycle, catalyzes highly chemoselective hydrogenation of α,β-unsaturated ketones with methanol as the hydrogen source. A wide variety of chalcones, styryl methyl ketones and vinyl methyl ketones, including sterically demanding
摘要 甲醇是一种安全、经济且易于处理的氢源。然而,它很少用于转移氢化反应。我们在此报告了一种环金属化铑配合物,铑环,以甲醇为氢源催化 α,β-不饱和酮的高度化学选择性氢化。多种查耳酮、苯乙烯基甲基酮和乙烯基甲基酮,包括空间要求高的那些,在回流的甲醇中在很短的反应时间内被还原为饱和酮,不需要中间气体保护,也没有羰基部分的还原观察到的。所描述的催化提供了一种实际上简单且操作安全的方法,用于还原 α,β-不饱和酮化合物中的烯键。