作者:Florian Pünner、Gerhard Hilt
DOI:10.1039/c2cc30777d
日期:——
transformation of enynes under cobalt-catalysis leads to symmetrical benzannulation products in dichloromethane. In tetrahydrofuran the cobalt-catalysed reactions afforded the unprecedented unsymmetrical benzannulation products in moderate to good yields and good regioselectivities. In addition, cyclotrimerisation of the alkyne subunit can be realised when electron-deficient enynes are applied in the
钴催化下烯炔的转化导致二氯甲烷中对称的苄环化产物。在四氢呋喃中,钴催化的反应以中等至良好的产率和良好的区域选择性提供了空前的不对称苯环化产物。另外,当将缺电子的炔烃用于钴催化的转化中以四氢呋喃为溶剂生成1,2,4-三乙烯基苯衍生物时,可以实现炔烃亚基的环三聚。