Vilsmeier−Haack Reactions of 2-Arylamino-3-acetyl-5,6-dihydro-4<i>H</i>-pyrans toward the Synthesis of Highly Substituted Pyridin-2(1<i>H</i>)-ones
作者:Dexuan Xiang、Yang、Rui Zhang、Yongjiu Liang、Wei Pan、Jie Huang、Dewen Dong
DOI:10.1021/jo7015482
日期:2007.10.1
A facile and efficient one-pot synthesis of highly substituted pyridin-2(1H)-ones was developed via Vilsmeier−Haack reactions of readily available enaminones, 2-arylamino-3-acetyl-5,6-dihydro-4H-pyrans, and a mechanism involving sequential ring-opening, haloformylation, and intramolecular nucleophilic cyclization reactions is proposed.
通过容易获得的烯胺酮,2-芳基氨基-3-乙酰基-5,6-二氢-4 H-吡喃酮的Vilsmeier-Haack反应开发了一种高度有效的吡啶2-2 (1 H)-one的简便有效的一锅合成方法,并提出了一种涉及顺序开环,卤代甲酰化和分子内亲核环化反应的机理。