反応式
Cl[C:2](Cl)(Cl)[CH:3]([OH:5])O.[OH2:8].O.O.O.O.O.O.O.O.O.S([O-])([O-])(=O)=O.[Na+].[Na+].[F:25][C:26]1[CH:36]=[CH:35][C:29]2[NH:30][CH:31]([CH3:34])[CH2:32][O:33][C:28]=2[C:27]=1[F:37].Cl.Cl.[NH2:40]O>O>[F:25][C:26]1[CH:36]=[CH:35][C:29]2[N:30]([C:3](=[O:5])[CH:2]=[N:40][OH:8])[CH:31]([CH3:34])[CH2:32][O:33][C:28]=2[C:27]=1[F:37]参加物
反応物 5
生成物 1
試薬・触媒・溶媒 1
反応条件
- 温度
- 77.5 °C
実験手順
A solution of 8.27 g (50 mmol) of chloral hydrate in 125 mL of water is treated with 112.8 g (0.35 mmol) of sodium sulfate decahydrate. The mixture is stirred and treated with a solution of 7,8-difluoro-3-methyl-3,4-dihydro-2H-benz[1,4]oxazine (Chem. Pharm. Bull., 1984; 32:4907) hydrochloride (prepared by dissolving 8.26 g (44.6 mmol) of the free base in 50 mmol of concentrated hydrochloric acid in 70 mL of 50% aqueous ethanol). The reaction is stirred and a solution of 9.8 g (140 mmol) of hydroxylamine hydrochloride in 50 mL of water is added. After heating at 75 to 80° C. for 3 hours, the reaction is stirred at room temperature overnight. The resulting precipitate is removed by filtration, washed with water, and the wet filter cake is dissolved in dichloromethane. The organic solution is washed with water, dried (MgSO4), decolorized with charcoal, filtered and concentrated in vacuo to give 10.5 g of the title compound, mp 188–190° C.
後処理
- stirringThe reaction is stirred
- stirringthe reaction is stirred at room temperature overnight
- customThe resulting precipitate is removed by filtration
- washwashed with water
- dissolutionthe wet filter cake is dissolved in dichloromethane
- washThe organic solution is washed with water
- dry with materialdried (MgSO4)
- filtrationfiltered
- concentrationconcentrated in vacuo
出典と根拠
- ORDレコード
- ord-b845dd2edd604c6ea501e182a83263a2
- 出典データセット
- uspto-grants-2006_08
- 特許番号
- US07094780B1
関連ノート
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