The cerium (III) mediated reaction of trimethylsilylmethyl magnesium chloride with esters and lactones: The efficient synthesis of some functionalised allylsilanes of use in annulation reactions
作者:Thomas V. Lee、Julia A. Channon、Carmel Cregg、John R. Porter、Frances S. Roden、Helena T-L. Yeoh
DOI:10.1016/s0040-4020(01)89114-6
日期:1989.1
(111) chloride alters the chemoselectivity of the reaction of trimethylsilylmethyl magnesium chloride with ester-acetals and also greatly improves the efficiency of reaction with lactones. In addition it gives improved preparations of the useful intermediates (7), (13), (18),(20) and (22) and gives direct access to the valuable functionalised allylsilanes (1) to (3) of use in annulation reactions.
氯化铈(111)的使用改变了三甲基甲硅烷基甲基氯化镁与酯-缩醛的反应的化学选择性,并且还大大提高了与内酯的反应效率。此外,它提供了有用的中间体(7),(13),(18),(20)和(22)的改进制备方法,并提供了直接用于环化反应的有价值的官能化烯丙基硅烷(1)至(3)的方法。 。