Enantioenriched α-carbamoyloxy-crotylboronate 5 was prepared via the corresponding γ-stannylated carbamate. This boronate was then subjected to homoaldol reactions with aromatic and aliphatic aldehydes furnishing (Z)-anti-homoallylic alcohols in high diastereoselectivity and with complete chirality transfer.
通过相应的δ-烷基化
氨基甲酸酯,制备出了对映体富集的δ-
氨基甲酰氧基-羰基
硼酸酯 5。然后将这种
硼酸酯与芳香族和脂肪族醛进行均醛反应,以高非对映选择性和完全手性转移生成 (Z) - 反均苯甲酰醇。