An efficient and convenient multicomponent reaction for the synthesis of 2-methyl-4,6-diarylpyrimidine under solvent-free conditions
作者:Liangce Rong、Hongxia Han、Hong Jiang、Yisi Dai、Mengjie Zhuang、Minxiang Cao、Shujiang Tu
DOI:10.1002/jhet.167
日期:2009.9
An efficient and convenient method for the preparation of 2-methyl-4,6-diarylpyrimidine derivatives by the multicomponentreactions of aromatic aldehydes, aromatic ketones, and acetamidine hydrochloride in the presence of sodium hydroxide undersolvent-freeconditions was reported. This method has the advantages of excellent yields, mild reactionconditions, easy workup, and environmentally friendly
KO Bu-mediated transition-metal-free synthesis of pyrimidines by selective three-component coupling reactions: A mechanistic insight
作者:Fei Wang、Zhiwen Deng、Yawen Wang、Fanshu Yuan、Xing Zhang、Guo-Ping Lu、Ninghua Fu、Yamei Lin
DOI:10.1016/j.tet.2022.132985
日期:2022.9
A KOtBu-mediated strategy for pyrimidine synthesis via selective three-componentcouplingreactions has been disclosed. This chemistry, in which a series of pyrimidines (20 examples) can be prepared with moderate to excellent yields, has high potential for large-scale operation owing to its metal-free conditions, atom and step economy. According to mechanistic studies, oxidative species can be generated
已经公开了一种通过选择性三组分偶联反应合成嘧啶的 KO t Bu 介导的策略。这种化学可以以中等至优异的产率制备一系列嘧啶(20 个实例),由于其无金属条件、原子和步骤经济性,具有大规模操作的巨大潜力。根据机理研究,在空气存在下,KO t Bu 或甲苯可以生成氧化物质,这可以引发醇氧化成醛(或酮)。同时,KO t Bu 不仅促进了缩合环化过程,还引发了二氢嘧啶环的脱氢。