反応式
[N+:1]([C:4]1[CH:5]=[CH:6][C:7]2[N:12]=[C:11]([C:13]3[CH:18]=[CH:17][C:16]([C:19]([CH3:22])([CH3:21])[CH3:20])=[CH:15][CH:14]=3)[O:10][C:9](=[O:23])[C:8]=2[CH:24]=1)([O-:3])=[O:2].[CH3:25][O:26][C:27]1[CH:32]=[CH:31][C:30]([NH2:33])=[CH:29][CH:28]=1>CN(C)C=O>[C:19]([C:16]1[CH:17]=[CH:18][C:13]([C:11]([NH:12][C:7]2[CH:6]=[CH:5][C:4]([N+:1]([O-:3])=[O:2])=[CH:24][C:8]=2[C:9]([NH:33][C:30]2[CH:31]=[CH:32][C:27]([O:26][CH3:25])=[CH:28][CH:29]=2)=[O:23])=[O:10])=[CH:14][CH:15]=1)([CH3:20])([CH3:22])[CH3:21]参加物
4
反応条件
- 温度
- 80 °C
実験手順
A mixture of 6-nitro-2-(4-tert-butylphenyl)-4H-3,1-benzoxazin-4-one (1.21 g, 3.73 mmol) and p-anisidine (551 mg, 4.47 mmol) in N,N-dimethylformamide (5 mL) was heated at 80° C. for 2.5 h. After cooling to room temperature, the reaction mixture was poured into an ice/water mixture and extracted twice with methylene chloride. The combined organic layers were washed with water, dried (sodium sulfate), and filtered. From the resulting solution crystallized 706 mg (42%) of the title product as a light brown solid. The mother liquor was chromatographed (silica gel, 20% diethyl ether/80% hexanes to 40% diethyl ether/60% hexanes) to give 242 mg (14%) of additional product; mp 210-11° C.
後処理
- temperatureAfter cooling to room temperature
- extractionextracted twice with methylene chloride
- washThe combined organic layers were washed with water
- dry with materialdried (sodium sulfate)
- filtrationfiltered
- customFrom the resulting solution crystallized 706 mg (42%) of the title product as a light brown solid
- customThe mother liquor was chromatographed (silica gel, 20% diethyl ether/80% hexanes to 40% diethyl ether/60% hexanes)
出典と根拠
- ORDレコード
- ord-2122cdd1c1bd490d902598d7cf226088
- 出典データセット
- uspto-grants-2003_08
- 特許番号
- US06605626B2
関連ノート
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