Triazole-gold (TAAu) catalyzed three-component coupling (A3 reaction) towards the synthesis of 2, 4-disubstituted quinoline derivatives
作者:Fusong Zhang、Qi Lai、Xiaodong Shi、Zhiguang Song
DOI:10.1016/j.cclet.2018.05.036
日期:2019.2
A gold-catalyzedthree-component coupling reaction (A3 reaction) was developed as an efficient approach for the synthesis of challenging 2, 4-disubstituted quinoline derivatives. Compared to previously reported Cu/Au bi-catalyst system, this protocol enables achieving A3 reaction only in the presence of triazole-gold catalyst. Notably, 4-alkyl substituted or 2-alkyl substituted quinoline derivatives
A pyridine-bis(oxazoline) ligand was efficiently immobilized by copper(I)-catalyzed azide-alkyne cycloaddition onto a polystyrene resin. The so obtained click-pybox resin 1a was associated with various metal salts (YbCl3, LuCl3, CuOTf) and the resulting resin-bound catalysts were explored in ring-opening of cyclohexene oxide, silylcyanation of benzaldehyde and alkynylation of imines. These new polymer-supported
A solventless Mannichcondensation of aldehydes, amines, and terminal alkynes catalysed by 10 mol% of CuCl2 was investigated. The components were simply mixed and heated together under vacuum, without any need of solidsupport or solvent. This results in the formation of Mannichproducts in high yields.
A novel efficient method for synthesis of propargylamines via three-component coupling of aryl azide, aldehyde, and alkyne promoted by iron–iodine–copper(I) bromide
作者:Kui Zhang、You Huang、Ruyu Chen
DOI:10.1016/j.tetlet.2010.08.024
日期:2010.10
A novel, efficient method has been developed for the synthesis of propargylamines through a three-component coupling of aryl azides, aldehydes, and alkynes in the presence of iron–iodine–copper(I) bromide as catalyst. This method is the first example for directly using aryl azides as an amino component in a three-component coupling reaction. Some of the major advantages of this protocol are: good yields
Highly efficient Grignard-type imine additions via C–H activation in water and under solvent-free conditions
作者:Chao-Jun Li、Chunmei Wei
DOI:10.1039/b108851n
日期:2002.1.30
A highly effective CuâRu catalyzed addition of terminal alkynes to imines via CâH activation has been achieved in water or under solvent-free conditions.