摘要 : Ethyl 2-(chloromethyl)-2-hydroxy-2H-chromene-3-carboxylates 2a&ndash;2j have been synthesized by reaction of substituted salicylaldehydes with ethyl 4-chloro-3-oxobutanoate, in the presence of piperidine in CH₂Cl<sub>2<... 展开 Ethyl 2-(chloromethyl)-2-hydroxy-2H-chromene-3-carboxylates 2a&ndash;2j have been synthesized by reaction of substituted salicylaldehydes with ethyl 4-chloro-3-oxobutanoate, in the presence of piperidine in CH₂Cl₂ at room temperature, in good yields. 收起