Progressive Direct Iodination of Sterically Hindered Alkyl Substituted Benzenes
作者:Stojan Stavber、Petra Kralj、Marko Zupan
DOI:10.1055/s-2002-33339
日期:——
Benzene derivatives bearing at least one bulky alkyl group (i-Pr or t-Bu) were selectively and effectively iodinated using elemental iodine activated by 1-(chloromethyl)-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor, F-TEDA-BF 4 ). Iodine atoms were progressively introduced at the most electron-rich and sterically less hindered position on the benzene ring. Not more than