NNN-pincer-copper complex immobilized on magnetic nanoparticles as a powerful hybrid catalyst for aerobic oxidative coupling and cycloaddition reactions in water
作者:Nasrin Zohreh、Mahboobeh Jahani
DOI:10.1016/j.molcata.2016.11.007
日期:2017.1
such as SEM, TEM, FT-IR, TGA, ICP, XRD, and elemental analysis. The finely engineered supported catalyst is employed in the aerobic oxidative coupling of terminalalkynes and click reaction using only 0.38 and 0.04 mol% catalyst, respectively. All reactions perform under solvent-free condition or green solvent H 2 O. Also, the catalyst is readily recovered and reused for up to 8 and 6 subsequent runs
摘要 描述了一种简单可靠的方法,用于制备第一个对表面组成具有高度控制的非均相 NNN-钳形铜杂化催化剂。该策略依赖于 2-氨基吡啶与三聚氯氰功能化磁性纳米粒子的共价键合,然后与 CuI 络合。这些声明通过不同的表征方法得到证实,例如 SEM、TEM、FT-IR、TGA、ICP、XRD 和元素分析。精细设计的负载型催化剂用于末端炔烃的有氧氧化偶联和点击反应,分别仅使用 0.38 和 0.04 mol% 的催化剂。所有反应均在无溶剂条件或绿色溶剂 H 2 O 下进行。此外,
Convenient route to water-sensitive sol–gel precursors using click chemistry
作者:Nirmalya Moitra、Joël J. E. Moreau、Xavier Cattoën、Michel Wong Chi Man
DOI:10.1039/c0cc03417g
日期:——
The CuAAC-âclickâ reaction under anhydrous conditions is reported as a new tool for the preparation of moisture-sensitive triethoxysilyl compounds that are obtained in 5 minutes in excellent yield with simple purification.
A single step reaction for the synthesis of novel 1,2,3-triazole based silatranes (TBS)-scaffolds (2a–2o) usingpolyfunctionalised organotriethoxysilanes (1a–1l) as precursors is described. The synthesized silatranes are the first compounds of this type and hydrolytically more stable than their open chain analogues. The structures of 2a–2o were characterized by IR, NMR (1H and 13C) and mass spectroscopy