β-keto esters by treatment with ozone followed by the addition of tin(H) chloride and ethyl diazoacetate. Monosubstituted olefins are first treated with ozone in the presence of methanol to generate methoxy hydroperoxides. The hydroperoxides are subsequently reduced with tin(II) chloride in the presence of ethyl diazoacetate to produce β-keto esters.
通过用
臭氧处理,然后添加
氯化锡(H)和
重氮乙酸乙酯,将三取代的烯烃转化为β-
酮酸酯。首先在
甲醇存在下用
臭氧处理单取代的烯烃,以生成甲氧基氢过氧化物。氢过氧化物随后在
重氮乙酸乙酯存在下用
氯化锡(II)还原,生成β-
酮酸酯。