Photoreaction of nitrobenzenes with hydrobromic acid
作者:Brian P. McIntyre、Brian D. Coleman、Gene G. Wubbels
DOI:10.1016/j.tetlet.2004.08.073
日期:2004.10
Nitrobenzene and three of its derivatives (3-CO2H, 3-OH, and 4-OH) react efficiently when irradiated (λ >340 nm) in concentrated hydrobromicacid typically to give high yields of 2,4,6-tribromoanilines. The quantum yield (Φ = 0.16 for nitrobenzene) is not changed appreciably by the electron withdrawing carboxy substituent, but is lowered by the electron donating hydroxy substituent. The reactivity