作者:John M. Ovian、Christopher B. Kelly、Vincent A. Pistritto、Nicholas E. Leadbeater
DOI:10.1021/acs.orglett.7b00060
日期:2017.3.17
An operationally simple, robust, metal-free approach to the synthesis of N-acyl azoles from both alcohols and aldehydes is described. Oxidative amidation is facilitated by a commercially available organic oxidant (4-acetamido-2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate) and proceeds under very mild conditions for an array of structurally diverse substrates. Tandem reactions of these
描述了从醇和醛两者合成N-酰基唑的操作简单,坚固,无金属的方法。可商购的有机氧化剂(4-乙酰氨基-2,2,6,6-四甲基哌啶-1-氧代四氟硼酸铵)促进了氧化酰胺化反应,并在非常温和的条件下对一系列结构多样的底物进行了氧化。这些活化的酰胺的串联反应,例如转酰胺基化和酯化,使得能够进一步完善。同样,可以回收用过的氧化剂并用于再生氧铵盐。