Acetic Anhydride → 1-(3,7-Dinitro-10h-phenothiazin-10-yl)ethanone
反応式
[N+:1]([C:4]1[CH:5]=[CH:6][C:7]2[NH:8][C:9]3[C:14]([S:15][C:16]=2[CH:17]=1)=[CH:13][C:12]([N+:18]([O-:20])=[O:19])=[CH:11][CH:10]=3)([O-:3])=[O:2].[C:21](OC(=O)C)(=[O:23])[CH3:22]>N1C=CC=CC=1>[N+:18]([C:12]1[CH:11]=[CH:10][C:9]2[N:8]([C:21](=[O:23])[CH3:22])[C:7]3[C:16]([S:15][C:14]=2[CH:13]=1)=[CH:17][C:4]([N+:1]([O-:3])=[O:2])=[CH:5][CH:6]=3)([O-:20])=[O:19]参加物
4
実験手順
A solution of 3,7-dinitrophenothiazine (MW 289.27, 24.0 g, 82.96 mmol), acetic anhydride (MW 102.09, 151 g, 1.48 mol) and pyridine (100 cm3) was stirred at reflux for 18 hours. The warm solution was then cooled to room temperature and poured carefully over ice water. The precipitate formed was filtered to give the title compound (MW 331.26, 21.14 g, 63.81 mmol, 77%) as a sand coloured solid which was recrystallised from acetone to give light yellow needles.