Room-Temperature Photoinduced Direct C–H-Arylation via Base-Promoted Homolytic Aromatic Substitution
作者:María E. Budén、Javier F. Guastavino、Roberto A. Rossi
DOI:10.1021/ol3034687
日期:2013.3.15
biaryl syntheses by photoinduced direct C–H arylation of benzene and thiophene in the presence of t-BuOK is reported. The reaction proceeds through photo- and base-promoted homolytic aromatic substitution. The o-, m- and p- substituted ArI, as well as the electron-donating and electron-withdrawing nature of the substituents were found be good to excellent substrates. Heteroaryl, ArBr, ArCl and double C–H
据报道,在存在t -BuOK的情况下,通过光诱导苯和噻吩的直接C–H芳基化,概念上实现联芳基合成的方法不同。反应通过光和碱促进的均相芳族取代进行。发现o-,m-和p-取代的ArI以及取代基的供电子和吸电子性质对于优良的底物而言是良好的。杂芳基,ArBr,ArCl和双CH芳基化成功实现。