esters and C2 symmetric stilbene-dicarboxylic esters were synthesized in high yields with excellent enantioselectivity by the cationic rhodium(I)/H8-binap complex-catalyzed [2+2+2] cycloaddition reactions. The rhodium-catalyzed and chelation-controlled enantioselection mechanism was elucidated by DFT calculations.
通过阳离子
铑(I)/H 8 -binap 配合物催化的[2+2+2] 环加成反应,以高收率合成了轴手性
苯乙烯-
羧酸酯和C 2对称茋-二
羧酸酯,并具有优异的对映选择性。通过 DFT 计算阐明了
铑催化和螯合控制的对映体选择机制。