Two types of rhodium-catalyzed CS/CS metathesis reactions: formation of CS/CS bonds and CC/SS bonds

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• 作者：Mieko Arisawa ; Yoko Tagami ; Masahiko Yamaguchi
• 关键词：Enantioselective aldol reaction ; (μ ; -Hydroxo)-platinum complex
• 刊名：Tetrahedron Letters
• 出版年：2008
• 期刊代码：109_00404039
• 类别：ch
• 出版时间：3 March 2008
• 卷：49
• 期：10
• 页码：1593-1597
• 文件大小：129 K

摘要

A rhodium complex catalyzes two types of single bond metathesis reactions of two CS bonds depending on the added ligand: CS/CS to CS/CS metathesis and CS/CS to CC/SS metathesis. In the presence of a catalytic amount of RhH(PPh₃)₄ and 1,1′-bis(diphenylphosphino)ferrocene (dppf), two 1-alkylthioalkynes exchange alkylthio groups to give equilibrium mixtures of four 1-alkylthioalkynes. When tris(p-methoxyphenyl)phosphine or diphenylmethylphosphine is used, 1,3-butadiynes are obtained.