Diastereoselective Synthesis of α-Oxyaminesvia Gold-, Silver- and Copper-Catalyzed, Three-Component Couplings of α-Oxyaldehydes, Alkynes, and Amines in Water
作者:Baosheng Huang、Xiaoquan Yao、Chao-Jun Li
DOI:10.1002/adsc.200606118
日期:2006.8
The three-componentcouplings of α-oxyaldehydes, alkynes, and amines in water were investigated by using gold, silver and copper catalysts. Gold(I) was found to be the most effective catalyst in this reaction to afford propargylamines in good yields and moderate diastereoselectivities. On the other hand, silver catalysts show the best catalytic activities on non-coordinating α-alkyl-substituted aldehydes
Fe3O4 nanoparticles: a robust and magnetically recoverable catalyst for three-component coupling of aldehyde, alkyne and amine
作者:Tieqiang Zeng、Wen-Wen Chen、Ciprian M. Cirtiu、Audrey Moores、Gonghua Song、Chao-Jun Li
DOI:10.1039/b920000b
日期:——
A robust, safe and magnetically recoverable Fe3O4 nanoparticle catalyzed three-componentcoupling of aldehyde, alkyne, and amine (A3-coupling) was developed. A diverse range of propargylamines were obtained in moderate to high yield under mild conditions in air. The separation and reuse of the magnetic Fe3O4 nanoparticles were very simple, effective and economical.
坚固,安全且可磁回收的Fe 3 O 4 纳米粒子 催化三组分偶联 醛, 炔烃,并开发了胺(A 3偶联)。在温和的条件下,在空气中以中等至高收率获得了各种炔丙基胺。磁性Fe 3 O 4的分离与再利用 纳米粒子 非常简单,有效且经济。