New Strategy for the Oxidation of Hantzsch 1,4‐Dihydropyridines and Dihydropyrido[2,3‐d]pyrimidines Catalyzed by DMSO under Aerobic Conditions
作者:Anil Saini、Sanjay Kumar、Jagir S. Sandhu
DOI:10.1080/00397910701410442
日期:2007.7
novel metal‐salt‐oxidant‐free, efficient, and economical method for the oxidation of Hantzsch 1,4‐dihydropyridines that uses aerial oxygen and solvent‐grade dimethylsulfoxide is described. Also, the synthesis of pyrido[2,3‐d]pyrimidines is achieved from in situ oxidation of dihydropyrido[2,3‐d]pyrimidines that arise from the reaction of 6‐aminouracils and cyano olefins in dimethylsulfoxide.
摘要描述了一种使用空气氧和溶剂级二甲基亚砜氧化 Hantzsch 1,4-二氢吡啶的新型无金属盐氧化剂、高效且经济的方法。此外,吡啶并[2,3-d]嘧啶的合成是通过二氢吡啶并[2,3-d]嘧啶在二甲亚砜中的反应产生的二氢吡啶并[2,3-d]嘧啶的原位氧化来实现的。