2,4-Dinitroaniline → 2-Bromo-4,6-dinitroaniline

Beteiligte Stoffe

Reaktionsschritte

To a solution of 2,4-dinitroaniline (2.2 g, 12 mmol) in 40 ml of AcOH was added 1.0 ml of Br2 dropwise and reaction mixture was stirred for 1 h. The reaction mixture was concentrated in vacua, yielding a dark residue which was diluted with EtOAc and washed with aqueous NaHCO3. Organic layer was dried over MgSO4 and concentrated in vacuo to provide 2.9 g (11 mmol, 92%) of 2,4-dinitro-6-bromo-aniline which was characterized by NMR and used in a following reaction without further purification.

Herkunft & Nachweise