Combining Eosin Y with Selectfluor: A Regioselective Brominating System for <i>Para</i>-Bromination of Aniline Derivatives
作者:Binbin Huang、Yating Zhao、Chao Yang、Yuan Gao、Wujiong Xia
DOI:10.1021/acs.orglett.7b01427
日期:2017.7.21
A mild, metal-free, and absolutely para-selective bromination of aniline derivatives has been developed in excellent yields, wherein the organic dye Eosin Y is employed as the bromine source in company with Selectfluor. Neither air nor moisture sensitive, this facile reaction proceeds smoothly at room temperature and completes within a short time. Mechanistic studies indicate a radical pathway; therefore
已开发出具有优异收率的温和,无金属且绝对对位选择性的苯胺衍生物溴化物,其中有机染料曙红Y与Selectfluor一起用作溴源。无论是对空气还是对湿气都不敏感,这种反应很容易在室温下进行并在短时间内完成。机理研究表明了一条根本途径。因此,的原位产生的溴化试剂的存在,“Selectbrom”,是假设,可合理解释为独特区域选择性段的-bromination Ñ -acyl-以及Ñ -sulfonylanilines。