Vinyl-substituted (Z)-stilbenes are stereoselectively synthesised on treatment of 4-arylbuta-2,3-dien-1-ols with arylboronic acids in the presence of a rhodium(I) catalyst. The reaction proceeds through the regioselective addition of organorhodium(I) species across the aryl-substituted carbon–carbon double bond of the allene moiety and subsequent δ-elimination of Rh(I)–OH.
乙烯基塑料在
铑(I)催化剂存在下,用芳基
硼酸处理4-芳基丁2,3-二烯-1-醇时,立体选择性地合成了取代的(Z)-
对苯二甲酸酯。反应通过区域选择性地加入
有机铑(I) 跨芳基取代的物质 碳–碳 的双键
丙二烯 部分和随后的δ消除
铑(I)–哦。