A convenient acid-promoted cyclization protocol for the formation of azaheterocycles from amino alcohols is described. The reaction involves the use of N,N-dimethylacetamide dimethyl acetal (DMADA) as the activating reagent of the hydroxyl group. Using this protocol, pyrrolidines or piperidines with various substituents can be synthesized in good to high yields.
描述了一种方便的酸促进的环化方案,用于从
氨基醇形成氮杂杂环。该反应涉及使用N,N-二甲基乙酰胺二甲基
乙缩醛(
DMADA)作为羟基的活化剂。使用该方案,可以以高产率到高产率合成具有各种取代基的
吡咯烷或
哌啶。