Acetone → HCID 70874615, 화합물

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C[O:2][C:3]1(OC)[CH2:8][CH2:7][N:6]([C:9]2[CH:28]=[CH:27][C:12]([O:13][CH2:14][C@@H:15]3[O:20][C:19]4=[N:21][C:22]([N+:24]([O-:26])=[O:25])=[CH:23][N:18]4[CH2:17][CH2:16]3)=[CH:11][CH:10]=2)[CH2:5][CH2:4]1.CC(C)=O.Cl>O>[N+:24]([C:22]1[N:21]=[C:19]2[N:18]([CH:23]=1)[CH2:17][CH2:16][C@H:15]([CH2:14][O:13][C:12]1[CH:11]=[CH:10][C:9]([N:6]3[CH2:5][CH2:4][C:3](=[O:2])[CH2:8][CH2:7]3)=[CH:28][CH:27]=1)[O:20]2)([O-:26])=[O:25]

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실험 절차

(R)-7-[4-(4,4-Dimethoxypiperidin-1-yl)phenoxymethyl]-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine (5.16 g), acetone (100 ml) and water (17 ml) were mixed. A 6 N hydrochloric acid aqueous solution (41 ml) was added thereto, followed by stirring at room temperature overnight. The reaction mixture was concentrated under reduced pressure. The remaining water layer was ice-cooled and neutralized by adding a 20% sodium carbonate aqueous solution. After being stirred at the same temperature for 10 minutes, the precipitated crystal was collected by filtration. The crystal thus obtained was dried at 60° C. to afford the title compound as a yellow solid (4.57 g).