Pronounced Catalytic Effect of a Micellar Solution of Sodium Dodecylsulfate (SDS) Upon a Three-Component Reaction of Aldehydes, Amines, and Ketones Under Neutral Conditions
作者:Abbas Ali Jafari、Fatemeh Moradgholi、Fatemeh Tamaddon
DOI:10.1002/ejoc.200801037
日期:2009.3
A micellar solution of anionic, cationic or neutral surfactants can be used as an excellent medium for three-component Mannich reactions of aldehydes, amines, and ketones at room temperature. Sodium dodecylsulfate turned out to efficiently catalyze the reaction in neutral pure water (pH ≈ 7), and the corresponding desired β-amino ketones precipitate while the reactions proceedes. This method provides
阴离子、阳离子或中性表面活性剂的胶束溶液可用作醛、胺和酮在室温下进行三组分曼尼希反应的优良介质。结果证明十二烷基硫酸钠在中性纯水 (pH ≈ 7) 中有效催化反应,并且在反应进行时相应的所需 β-氨基酮沉淀。该方法在温和的反应条件、干净的反应曲线、提高的产率和优异的区域选择性和非对映选择性方面提供了一种新的改进的三组分曼尼希反应,后处理简单。观察到在水中中性条件下点击化学的有趣例子。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)