Cu(N-heterocyclic carbene)chloride: an efficient catalyst for multicomponent click reaction for the synthesis of 1,2,3-triazoles in water at room temperature
作者:Vishal B. Purohit、Sharad C. Karad、Kirit H. Patel、Dipak K. Raval
DOI:10.1039/c4ra08412h
日期:——
and NMR spectroscopy. It was employed for three component click reaction of benzyl chlorides 1a–e, alkynes 2a–c and sodium azide 3 in water at roomtemperature. All the synthesized compounds 4a–o were characterized by elemental analysis, IR, and 1HNMR spectroscopy. The catalyst was easy to prepare, very versatile, reusable and was found to be highly active at low catalyst loading for a variety of substrates
NHSi/NHGe-Supported Copper Halide and Pseudohalide Complexes: Synthesis and Application
作者:Jabed Hossain、Jishnu Sai Gopinath、Srinu Tothadi、Pattiyil Parameswaran、Shabana Khan
DOI:10.1021/acs.organomet.2c00480
日期:2022.12.12
Herein, we have demonstrated the complexation reaction of silylene and germylene [PhC(NtBu)2EN(TMS)2; E = Si (A) and Ge (B)] with several copper(I) salts and further utilized them (1–6) as efficient catalysts in CuAAC reaction. The copper complexes (2 and 4–6) were synthesized from the reaction of [PhC(NtBu)2EN(TMS)2] [E = Si (A) or Ge (B)] and CuX (X = Br, I, and SCN). The molecular structures of
在此,我们展示了亚甲硅基和亚甲锗烷基的络合反应 [PhC(N t Bu) 2 EN(TMS) 2;E = Si ( A ) 和 Ge ( B )] 与几种铜 (I) 盐,并进一步利用它们 ( 1–6 ) 作为 CuAAC 反应中的有效催化剂。铜络合物(2和4–6)是通过 [PhC(N t Bu) 2 EN(TMS) 2 ] [E = Si ( A ) 或 Ge ( B )] 和 CuX (X = Br,我和 SCN)。2、4、5、6的分子结构_ _ _ _通过单晶 X 射线衍射研究建立。密度泛函理论研究表明,双金属 Cu 催化剂通过将反应物锚定在附近并减少偶极子和亲偶极体的前沿轨道之间的能隙来促进环加成反应。
Magnetically separable CuFe2O4 nano particles catalyzed multicomponent synthesis of 1,4-disubstituted 1,2,3-triazoles in tap water using ‘click chemistry’
The synthesis of 1,4-disubstituted 1,2,3-triazoles is attempted using magnetically separable and reusable copper ferrite nano particles in a one pot reaction, in tap water. (C) 2012 Elsevier Ltd. All rights reserved.
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