Diastereoselectivity in the directed aldol reactions of 1-fluoro-3,3-dimethyl-butanone enolates and enol silyl ethers.
作者:John T. Welch、Karl W. Seper
DOI:10.1016/s0040-4039(01)81575-6
日期:——
High diastereoselectivity was observed in the directed aldol reaction of lithium enolates of 1-fluoro-3,3-dimethylbutanone while an apparent reversal of diastereoselection was found in Lewis acid mediated reactions of corresponding enol silyl ethers.
在1-氟-3,3-二甲基丁酮的烯醇锂的定向羟醛反应中观察到高非对映选择性,而在路易斯酸介导的相应烯醇甲硅烷基醚的反应中发现非对映选择性的明显逆转。