Cellulose supported cuprous iodide nanoparticles (Cell-CuI NPs): a new heterogeneous and recyclable catalyst for the one pot synthesis of 1,4-disubstituted – 1,2,3-triazoles in water
作者:Pramod V. Chavan、Kapil S. Pandit、Uday V. Desai、Makarand A. Kulkarni、Prakash P. Wadgaonkar
DOI:10.1039/c4ra05080k
日期:——
cuprous iodide nanoparticles (Cell-CuI NPs) have been demonstrated for the first time as an efficient heterogeneouscatalyst in the click synthesis of 1,4-disubstituted 1,2,3-triazoles by a one-pot three component reaction between aralkyl/alkyl bromides, alkynes and sodium azide in water. The catalyst has been characterized by XRD, HRTEM, SEM, ICP–AES, EDS as well as IR spectroscopy. It was found to
Copper(<scp>ii</scp>) complexes supported by click generated mixed NN, NO, and NS 1,2,3-triazole based ligands and their catalytic activity in azide–alkyne cycloaddition
作者:Daniel Mendoza-Espinosa、Guillermo Enrique Negrón-Silva、Deyanira Ángeles-Beltrán、Alejandro Álvarez-Hernández、Oscar R. Suárez-Castillo、Rosa Santillán
DOI:10.1039/c4dt00323c
日期:——
new copper(II) complexes supported by click generated mixed NN, NO, and NS 1,2,3-triazoles are reported. The four complexes display a 1 : 2 copper/ligand ratio and give monomeric units in the solidstate. Crystal structures demonstrate that depending on the flexibility of the ligand NX (X = O, N, S) pendant arm, the coordination environment around the metal center can feature squareplanar or octahedral
1-D copper(I) coordination polymer based on bidentate 1,3-dithioether ligand: Novel catalyst for azide-alkyne-cycloaddition (AAC) reaction
作者:Sankar Saha、Kinkar Biswas、Basudeb Basu
DOI:10.1016/j.tetlet.2018.05.040
日期:2018.6
A novel 1,3-bis(4-fluorophenylthio)-propane ligand based CuI 1-D polymeric coordination complex having formula ([(CuI)2ArS(CH2)3SAr}2]n, Ar = 4-F-C6H4) has been synthesized and characterized by 1H NMR, 13C NMR and single crystal XRD techniques. This complex has been employed for the first time as suitable catalyst for base-free one-pot three-component regioselective azide-alkyne cycloaddition (AAC)
基于式([(CuI)2 ArS(CH 2)3 SAr} 2 ] n,Ar = 4-FC 6的新型的1,3-双(4-氟苯硫基)丙烷配体的CuI 1-D聚合物配位络合物H 4)已经合成并通过1 H NMR,13 C NMR和单晶XRD技术表征。该络合物首次用作无碱单锅三组分区域选择性叠氮化物-炔烃环加成(AAC)反应的合适催化剂。还使用我们的催化体系通过一锅两步反应以多组分方式制备了具有硫官能化侧链的新型1,2,3-三唑化合物。
Synthesis of copper containing polyaniline composites through interfacial polymerisation: An effective catalyst for Click reaction at room temperature
supported Cu (Cu/PANI) catalyst served as an efficient heterogeneouscatalyst for the regioselective synthesis of 1,4-disubstituted-1H-1,2,3-triazoles via click chemistry approach. Herein, we have illustrated the development of two copper based heterogeneouscatalysts using PANI as solid support through interfacial polymerization method. The catalysts can be easily recycled and reused resulting excellent
聚苯胺(PANI)负载的Cu(Cu / PANI)催化剂可作为有效的非均相催化剂,用于通过点击化学方法区域选择性合成1,4-二取代-1 H -1,2,3-三唑。在本文中,我们通过界面聚合方法说明了使用PANI作为固体载体的两种铜基非均相催化剂的开发。该催化剂可以容易地再循环和再利用,从而产生了极佳的三唑产率。该方案的主要优点是易于制备,催化剂的多相性质,使用水作为助溶剂和室温反应条件。在本文中,已经描述了使用我们开发的Cu-PANI催化剂合成1 H -1,2,3-三唑的三种不同方案。
A bile acid-based pyridino-triazole ligand for Cu(I)-stabilization and its application in Cu(I) catalyzed click reactions
作者:Aradhana Nayal、Pramod S. Pandey
DOI:10.1016/j.tetlet.2020.152509
日期:2020.11
A bile acid based pyridino-triazole ligand to stabilize Cu(I) state has been developed. The ligand was found to catalyze click reactions of a number of alkynes and azides in presence of Cu(CH3CN)4.BF4 at very low catalyst loading and under milder reaction conditions.