Transition-Metal-Free Semihydrogenation of Diarylalkynes: Highly Stereoselective Synthesis of trans-Alkenes Using Na2S·9H2O
Zhengwang Chen*, Miaoting Luo, Yuelu Wen, Guotian Luo and Liangxian Liu*
*Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, P.R. China, Email: chenzwang126.com, lxliuxmu.edu.cn
Z. Chen, M. Luo, Y. Wen, G. Luo, L. Liu, Org. Lett., 2014, 16, 3020-3023.
Green water can be used as hydrogen donor for a highly stereoselective and efficient transition-metal-free semihydrogenation of various internal diarylalkynes to E-alkenes. The reactions are conducted under convenient conditions and provide products in good to excellent yields, with broad substrate scope.
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semireduction of alkynes, green chemistry