标题:Sulfur-silicon bond activation catalysed by Cl/Br ions: waste-free synthesis of unsymmetrical thioethers by replacing fluoride catalysis and fluorinated substrates in SNAr reactions
摘要:In contrast with conventional activation of Nu-SiR3 reagents by F ion attributed to strong affinity of Si to F, S-Si activation can now be achieved by using Cl/Br ions of TBAX as catalysts via formation of weaker X-Si bonds and Me3Si-X. This led to a waste-free synthesis of unsymmetrical thioethers via F-free SNAr reactions of activated (hetero)aryl halides and RS-SiMe3, with recovery of useful Me3Si-X reagent in high yields..
链接:
http://pubs.rsc.org/en/content/articlelanding/2014/gc/c4gc00535j#!divAbstract