An efficient and recyclable thiourea-supported copper(<scp>i</scp>) chloride catalyst for azide–alkyne cycloaddition reactions
作者:Milan Kr. Barman、Ashish Kumar Sinha、Sharanappa Nembenna
DOI:10.1039/c5gc02545a
日期:——
A reaction between two equivalents of bulky thiourea i.e., 1-3-bis(2,6-dimethylphenyl)thiourea(L) [L = (ArNH)2C=S); (Ar = 2,6-Me2C6H3)}] and CuCl2 or CuCl in THF solvent afforded a bulky thiourea stabilized copper(I) halide...
Synthesis of nanomagnetic supported thiourea-copper(I) catalyst and its application in the synthesis of triazoles and benzamides
作者:Leila Mohammadi、Mohammad Ali Zolfigol、Ardeshir Khazaei、Meysam Yarie、Samira Ansari、Saeid Azizian、Maryam Khosravi
DOI:10.1002/aoc.3933
日期:2018.1
A novel nanomagnetic supported thiourea–copper(I) complex and inorganic–organic Takemoto‐like hybrid nanomagnetic catalyst was designed, and synthesized. The prepared naomagnetic catalyst was characterized using Fourier transform infrared spectroscopy, X‐ray diffraction, energy‐dispersive X‐ray analysis, transmission and scanning electron microscopies, thermogravimetry, nitrogen adsorption/desorption
Heteroleptic Bis(N-heterocyclic carbene)Copper(I) Complexes: Highly Efficient Systems for the [3+2] Cycloaddition of Azides and Alkynes
作者:Faïma Lazreg、Alexandra M. Z. Slawin、Catherine S. J. Cazin
DOI:10.1021/om3006195
日期:2012.11.26
The first examples of heteroleptic bis-N-heterocyclic carbene (NHC) copper(I) complexes and a mixed NHC–phosphine Cu complex are reported. These complexes are easily synthesized from the reaction of [Cu(OH)(NHC)] with various imidazol(idin)ium or phosphonium tetrafluoroborate salts. These cationic heteroleptic bis-NHC Cu complexes are highly active systems for the azide–alkyne cycloaddition leading
Regioselective synthesis of 1,4-disubstituted triazoles using bis[(L)prolinato-N,O]Zn complex as an efficient catalyst in water as a sole solvent
作者:Mazaahir Kidwai、Arti Jain
DOI:10.1002/aoc.1816
日期:2011.8
A concise, convenient and mild route for one‐pot regioselective synthesis of N‐aryl‐ and N‐alkyltriazoles in water as a sole solvent is reported. The methodology involves a three‐component reaction comprising aryl/alkyl‐alkyne, sodiumazide and aryl/alkyl/allyl halide catalyzed by zinc(II) L‐prolinate. Prominent features of our protocol are incorporation of transition metal catalyst other than copper