反应详情

A solution of 50 g (0.239 mol) N,N-dimethyl-N′-(4-nitro-phenyl)-ethane-1,2-diamine in 500 mL acetic anhydride was stirred for 3.5 h at 130° C., then evaporated down i. vac. and neutralised with saturated aqueous sodium bicarbonate. The residue was exhaustively extracted with EtOAc, the combined org. phases were dried over sodium sulphate and evaporated down i. vac.

1. customevaporated down i
2. extractionThe residue was exhaustively extracted with EtOAc
3. dry with materialphases were dried over sodium sulphate
4. customevaporated down i