Treatment of (−)-menthyl carboxylates(2) with 2 equiv of p-tolylsulfinylcarbanion(1) afforded the corresponding optically active β-keto sulfoxides(3) together with optically active methyl p-tolyl sulfoxide. The enantiomeric purity and the predominant configuration of the products were discussed.
用 2 当量的
对甲苯基亚磺酰基碳负离子 (1) 处理 (-)-薄荷基
羧酸盐 (2),得到相应的旋光 β-酮亚砜 (3) 和旋光
甲基对甲苯亚砜。讨论了产物的对映体纯度和主要构型。