Xanthate-mediated synthesis of (<i>E</i>)-alkenes by semi-hydrogenation of alkynes using water as the hydrogen donor
作者:Xianglin Luo、Xiuwen Chen、Lu Chen、Kun Zhang、Yibiao Li
DOI:10.1039/c9cc00128j
日期:——
Semi-hydrogenation of alkynes is one of the most widely used methods for obtaining alkenes in laboratory preparation and in industry. Transition metal catalysts have been extensively studied for this transformation, but the tolerance of functional groups, such as pyridine, –OH, –NH2, –Bpin, and halides, and the toxicity of the trace amount of transition metal catalysts are still highly challenging
炔烃的半氢化是在实验室制备和工业中获得烯烃的最广泛使用的方法之一。过渡金属催化剂已针对此转化进行了广泛研究,但对吡啶,-OH,-NH 2,-Bpin和卤化物等官能团的耐受性以及微量过渡金属催化剂的毒性仍极具挑战性。在这项研究中,我们报告了使用廉价的市售黄药作为介质,实现炔烃半加氢的通用且稳健的策略。机理研究支持非自由基过程,H 2 O充当氢供体。