Redox-Neutral Copper(II) Carboxylate Catalyzed α-Alkynylation of Amines
作者:Deepankar Das、Aaron X. Sun、Daniel Seidel
DOI:10.1002/anie.201300021
日期:2013.3.25
Cocktail of three: A new strategy for iminium ion isomerization was applied to the direct, redox‐neutralα‐alkynylation of amines. Copper(II) 2‐ethylhexanoate [Cu(2‐EH)2] was identified as the optimal catalyst for this three‐component coupling reaction of secondary amines, aldehydes, and alkynes. MW=microwave.
Amino acid ionic liquid bound copper Schiff base catalyzed highly efficient three component A3-coupling reaction
作者:Manish Varyani、Praveen K. Khatri、Suman L. Jain
DOI:10.1016/j.catcom.2016.01.020
日期:2016.3
Amino acidionicliquid Schiff base derived from dl-threonine and salicylaldehyde was complexed with copper (II) ions and used as an efficient and reusable catalyst for multicomponent synthesis of propargylamines via A3 coupling of aldehydes, amines, and alkynes. The ionicliquid derived catalyst was readily synthesized, reusable and exhibited superior catalytic activity. The synthesized catalyst showed