2-Chloro acid methyl esters were prepared in good yields treating 2-chloro aldehyde dimethyl acetals with trichloroisocyanuric acid in DMF. Aldehyde dimethyl acetals with the 2-halogen on a tertiary carbon atom were poorly reactive and could be oxidized effeciently only after their transformation into 1,3-dioxolanes.
2-
氯酸甲基酯通过在
DMF中用
三氯异氰尿酸处理2-
氯醛二甲基
缩醛制备,产率良好。含有2-卤素的醛二甲基
缩醛在三级碳原子上的反应活性较差,仅在转化为1,3-二氧杂
环戊烷后才可有效氧化。