Alkynyl Sulfonium Salts Can Be Employed as Chalcogen‐Bonding Catalysts and Generate Alkynyl Radicals under Blue‐Light Irradiation
作者:Yu Lu、Qiang Liu、Zhi‐Xiang Wang、Xiang‐Yu Chen
DOI:10.1002/anie.202116071
日期:2022.4.11
Alkynyl sulfonium salts were employed as chalcogen bonding (ChB) catalysts for the first time. They display superior capability in the generation of alkynyl radicals under blue-light irradiation.
炔基锍盐首次被用作硫属键(ChB)催化剂。它们在蓝光照射下显示出卓越的炔基自由基生成能力。
Magnetite (Fe3O4) nanoparticles: an efficient and recoverable catalyst for the synthesis of alkynyl chalcogenides (selenides and tellurides) from terminal acetylenes and diorganyl dichalcogenides
作者:Marcelo Godoi、Daiane G. Liz、Eduardo W. Ricardo、Manuela S.T. Rocha、Juliano B. Azeredo、Antonio L. Braga
DOI:10.1016/j.tet.2013.09.095
日期:2014.5
We present herein a new and efficient methodology for the synthesis of alkynyl chalcogenides from terminal acetylenes and diorganyl dichalcogenides, catalyzed by Fe3O4 nanoparticles. This new approach provided the desired products in good to excellent yields. Moreover, the catalyst was easily recoverable using an external magnet and reused for further experiments without loss of catalytic activity. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of alkynyltellurides mediated by K<sub>3</sub>PO<sub>4</sub> and DMSO
作者:Manoela do Sacramento、Larissa Menezes、Bruna Goldani、Gelson Perin、Marcio S. Silva、Thiago Barcellos、Diego Alves
DOI:10.1039/c9nj01995b
日期:——
In the present work, a simple method for the synthesis of alkynyltellurides is described by the reactions of terminal alkynes with diorganyl ditellurides in the presence of a catalytic amount of K3PO4. In both substrates, it was possible to vary the aryl and alkyl groups, obtaining the products of interest in short reaction times and in yields ranging from 30 to 93%. This methodology, different from
在目前的工作中,描述了一种简单的合成炔基碲化物的方法,该方法是在催化量的K 3 PO 4存在下,末端炔烃与二有机基二碲化物反应。在两种底物中,都可以改变芳基和烷基,从而以较短的反应时间和30%至93%的产率获得目标产物。该方法与文献中已经报道的方法不同,具有使用催化量的弱碱而不使用金属催化剂的优点。