Catalyst‐Free Synthesis of α‐Functionalized 2
<i>H</i>
‐Chromenes in Water: A Tandem Self‐Promoted
<i>pseudo</i>
‐Substitution and Decarboxylation Process
作者:Chunhui Jiang、Yayun Chen、Hongkui Zhang、Jian‐Ping Tan、Tianli Wang
DOI:10.1002/asia.201900641
日期:2019.9.2
protocol was also demonstrated by the scale-up synthesis and versatile conversions of the title product into other useful compounds. In addition, control experiments indicated that water was essential for the reactivity. Mechanistic studies further revealed that the reaction proceeded through a self-promoted tandem pseudo-substitution and decarboxylation process.
开发了β-酮酸与2H-苯甲基缩醛在水中的无催化剂脱羧反应。该反应具有广泛的底物范围和容易获得的起始原料,以高产率提供α-官能化的2H-色烯。该方案的合成价值还通过按比例放大的合成以及标题产物向其他有用化合物的多用途转化来证明。另外,对照实验表明水对于反应性是必不可少的。机理研究进一步表明,该反应是通过自我促进的串联假取代和脱羧过程进行的。