An efficient double catalytic system, combining chiral amine and 2-mercaptobenzoic acid, is applied for α′,β-regioselective [4+2] annulations of 2-cyclopentenone with a diversity of activated alkenes, constructing multifunctional chiral bicycle[2,2,1]heptane scaffolds in good to excellent yields and enantioselectivities. In comparison with the traditional cross-dienamine species between 2-cyclopentenone
一种高效的双催化体系,将手性胺和2-巯基
苯甲酸结合在一起,用于
2-环戊烯酮与多种活化烯烃的α',β-区域选择性[4 + 2]环化反应,构建了多功能手性自行车[2,2, 1]
庚烷支架具有良好至极好的收率和对映选择性。与
2-环戊烯酮和手性胺之间的传统交叉二烯胺相比,含有共价连接的
硫醇催化剂的间断烯胺中间体显示出显着改善的反应性。