Transition-Metal-Free<i>N</i>-Arylation of Pyrazoles with Diaryliodonium Salts
作者:Zsombor Gonda、Zoltán Novák
DOI:10.1002/chem.201502995
日期:2015.11.16
developed for the N‐arylation of pyrazoles using diaryliodoniumsalts. The transformation does not require any transition‐metal catalyst and provides the desired N‐arylpyrazoles rapidly under mild reaction condition in the presence of aqueous ammonia solution as a mild base without the use of inert atmosphere. The chemoselectivity of unsymmetric diaryliodoniumsalts was also explored with large number
Practical synthesis of diaryliodonium(iii) triflates using ArI(OAc)2/TfOH/MeCN reaction system
作者:K. Komiyama、S. Kobayashi、T. Shoji、K. Kikushima、T. Dohi、Y. Kita
DOI:10.1007/s11172-020-3035-9
日期:2020.12
Diaryliodonium(iii) triflates were synthesized in a safe manner by the reaction of aryliodine(iii) diacetates ArI(OAc)2 with triflic acid (TfOH) in MeCN under mild exothermic conditions. This method provides access to a variety of diaryliodonium(iii) triflates, including derivatives with two different aryl substituents, with high purity.