几个简单,快速和实用的协议已被开发来合成内部或末端炔丙胺和查耳酮通过甲3 -耦合醛,胺的反应,和炔由容易获得的催化剂催化的Ag 2 CO 3无溶剂条件下进行。反应进行得很顺利,以良好的收率和良好的官能团耐受性提供了各种产品。已经证明了克级制备,生物活性分子合成和不对称底物。此外,已经提出了合成不同产物的合理机制。
A new copper complex on graphene oxide: A heterogeneous catalyst for
<i>N</i>
‐arylation and C‐H activation
作者:Ayushi Mittal、Shweta Kumari、Parmanand、Deepak Yadav、Sunil K. Sharma
DOI:10.1002/aoc.5362
日期:2020.2
PXRD, UV–Visible, TGA, XPS, FESEM, TEM, EDAX, Elemental mapping, BET, CHNS and AAS analysis. The complex has been found to be efficient and reusable heterogeneous catalyst for the N‐arylation and C‐Hactivation reactions, both the catalytic reactions were found to be simple, cleaner and give high yields (~ 90%) of product. The catalyst can be easily filtered out from the reaction mixture and reused up
氧化石墨烯负载的Cu(II)配体配合物(GO @ AP / L-Cu)已被合成并通过FT-IR,拉曼,PXRD,UV-可见,TGA,XPS,FESEM,TEM,EDAX,元素图谱,BET和表征,CHNS和AAS分析。已发现该络合物是一种有效且可重复使用的N异相催化剂芳基化反应和CH活化反应,发现这两种催化反应都简单,清洁,并能获得高收率(〜90%)的产品。可以容易地将催化剂从反应混合物中滤出并重复使用多达四次,而不会显着降低催化活性。在将水性介质用于反应和催化剂稳定性的意义上,所报道的方法是经济且新颖的。所有分离出的有机产物均根据其物理和光谱数据得到充分表征。
Copper-based catalysts derived from salen-type ligands: synthesis of 5-substituted-1<i>H</i>-tetrazoles <i>via</i> [3+2] cycloaddition and propargylamines <i>via</i> A<sup>3</sup>-coupling reactions
spectroscopic studies. Molecular structures of complexes 1, 2 and 4 were determined by X-ray crystallography. Copper complexes (1-4) were employed as a catalyst for the [3+2] cycloaddition and A3-couplingreactions. A mutual approach of salen-type ligands and metal via active participation of ligands allow to achieve the catalytic reactions. Reaction pathways were proposed and possible intermediate species
Manganese(<scp>ii</scp>) chloride catalyzed highly efficient one-pot synthesis of propargylamines and fused triazoles via three-component coupling reaction under solvent-free condition
作者:Shakil N. Afraj、Chinpiao Chen、Gene-Hsian Lee
DOI:10.1039/c4ra03232b
日期:——
A one-pot green and highly efficient method for the synthesis of propargylamines and diastereoselective synthesis of fused triazoles via three-component coupling in the presence of manganese(II) chloride as a catalyst and a catalyst-free 1,3-dipolar cycloaddition reaction, respectively, without using a co-catalyst or activator is reported. This methodology is efficient, eco-friendly, operationally
Ag-grafted covalent imine network material for one-pot three-component coupling and hydration of nitriles to amides in aqueous medium
作者:Noor Salam、Sudipta K. Kundu、Rostam Ali Molla、Paramita Mondal、Asim Bhaumik、Sk. Manirul Islam
DOI:10.1039/c4ra07622b
日期:——
A nitrogen rich porous covalent imine network material (CIN-1) has been successfully employed for grafting silver nanoparticles (Ag NPs). The Ag NPs grafted CIN-1, Ag-CIN-1 has been characterized by elemental analysis, powder X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-vis diffuse reflectance spectroscopy (DRS), thermogravimetric