2-Nitro-5-(phenylsulfonyl)phenol → HCID 14053206, Verbindung
Reaktionsgleichung
[C:1]1([S:7]([C:10]2[CH:11]=[CH:12][C:13]([N+:17]([O-])=O)=[C:14]([OH:16])[CH:15]=2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>C(O)C.[Pd]>[NH2:17][C:13]1[CH:12]=[CH:11][C:10]([S:7]([C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)(=[O:9])=[O:8])=[CH:15][C:14]=1[OH:16]Komponenten
4
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
To a 1 liter flask was added 500 mg of a 5% dispersion of palladium metal on charcoal. The solid was wetted with 40 mL of ethanol and the flask was charged with a solution of 5-benzenesulfonyl-2-nitro-phenol (17.35 g., 62.1 mmol) in 350 mL ethanol. The flask was purged with hydrogen gas and a pressure of 1 Atm was maintained for 2 hours. The reaction mixture was filtered through celite, the filtrate concentrated in vacu, and the resulting residue was purified by flash (1:1:2 of “magic base” (6:1:0.1 methylene chloride:methanol:ammonia):CH2Cl2:hexanes.) The resulting solid was recrystallized from 300 mL EtOAc to give 7.68 g (31 mmol, 50%) of 2-amino-5-benzenesulfonyl-phenol as crystalline solid. MS: 250 (M+H)+.