Effect of structural factors and solvent nature in bromination of anilines
摘要:
Reaction of electrophilic bromination of aniline containing various ortho, meta, and para substituents in the aromatic ring was studied. The optimal conditions for synthesis of mono-, di-, tri-, and tetrabromo derivatives of aniline and brominated analog of Aniline Black were found.
Regioselective, photochemical bromination of aromatic compounds using N-bromosuccinimide
作者:Prakash K. Chhattise、A.V. Ramaswamy、Suresh B. Waghmode
DOI:10.1016/j.tetlet.2007.10.126
日期:2008.1
Regioselective nuclear bromination of aromaticcompounds is investigated with N-bromosuccinimide as the brominating agent under UV irradiation to afford the corresponding brominated compounds. The reaction proceeds at ambient temperature (30 ± 2 °C) without any catalyst. In most of the reactions, regioselectively mono-brominated products are obtained in good to high yields. The conversion and selectivity
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