Mechanochemical Synthesis of Active Magnetite Nanoparticles Supported on Charcoal for Facile Synthesis of Alkynyl Selenides by C−H Activation
作者:Balaji Mohan、Ji Chan Park、Kang Hyun Park
DOI:10.1002/cctc.201600280
日期:2016.7.20
Magnetite (Fe3O4) nanoparticlessupported on charcoal, graphene, or SBA‐15 were prepared by a simple solid‐state grinding technique and subsequent thermal treatment. The Fe3O4 nanoparticlessupported on activated charcoal exhibited high catalytic activity and furnished good yields of the alkynyl selenide product in the cross‐couplingreaction of diphenyl diselenide and alkynes through activation of
通过简单的固态研磨技术和随后的热处理制备了负载在木炭,石墨烯或SBA-15上的磁铁矿(Fe 3 O 4)纳米粒子。负载在活性炭上的Fe 3 O 4纳米颗粒表现出高催化活性,并在生态友好条件下通过活化C-H和Se-Se键,在二苯基二硒化物与炔烃的交叉偶联反应中提供了炔基硒化物产物的良好收率。传统的铜基催化剂可实现相同的有机转化。
New arylselanylpyrazole-copper catalysts: Highly efficient catalytic system for C Se and C S coupling reactions
作者:Felipe Lange Coelho、Lucielle Codeim Dresch、Rafael Stieler、Leandra Franciscato Campo、Paulo Henrique Schneider
DOI:10.1016/j.catcom.2018.12.009
日期:2019.3
CSe and CS couplingreactions. The performance of these complexes for CSe reactions was investigated in chalcogenoacetylene synthesis. The reactions were carried out under mild and aerobic conditions and afforded selanylalkynes bearing a variety of electron-withdrawing and electron-donating groups. The performance of these catalysts for CS coupling was investigated through the reaction of aryl halides