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Water → (S)-Diethyl (7,8-Difluoro-3-Methyl-3,4-Dihydro-2H-[1,4]Benzoxazin-4-Yl)Methylene-Malonate

HRID 8478
ノート
印刷プレビュー

反応式

HRID 8478 の反応式
[OH-].[K+].F[C:4]1[C:26]([F:27])=[C:25]([F:28])[CH:24]=[CH:23][C:5]=1[N:6]([CH:11]=[C:12]([C:18]([O:20][CH2:21][CH3:22])=[O:19])[C:13]([O:15][CH2:16][CH3:17])=[O:14])[C@@H:7]([CH3:10])[CH2:8][OH:9].C(OC=C(C(OCC)=O)C(OCC)=O)C.O>[Cl-].C([N+](C)(C)C)C1C=CC=CC=1.CN(C=O)C>[CH2:16]([O:15][C:13](=[O:14])[C:12](=[CH:11][N:6]1[C:5]2[CH:23]=[CH:24][C:25]([F:28])=[C:26]([F:27])[C:4]=2[O:9][CH2:8][C@@H:7]1[CH3:10])[C:18]([O:20][CH2:21][CH3:22])=[O:19])[CH3:17]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 962WaterHCID 6871Diethyl (ethoxymethylene)malonateHCID 14797Potassium HydroxideHCID 11485652Diethyl [2,3,4-trifluoro[(1S)-2-hydroxy-1-methylethyl]anilino]methylenemalonate

生成物 1

HCID 11089557(S)-Diethyl (7,8-Difluoro-3-Methyl-3,4-Dihydro-2H-[1,4]Benzoxazin-4-Yl)Methylene-Malonate

試薬・触媒・溶媒 2

HCID 5963
Benzyltrimethylammonium chloride
触媒
HCID 6228Dimethylformamide溶媒2 回

反応条件

温度
60 °C

実験手順

Potassium hydroxide (180 mg) and benzyltrimethylammonium chloride (60.7 mg) were dissolved in DMF (15 ml) by heating to 60° C. and a solution (5 ml) of diethyl [2,3,4-trifluoro[(1S)-2-hydroxy-1-methylethyl]anilino]methylenemalonate (1 g, 99.8% ee) and diethyl ethoxymethylenemalonate (120 mg) in DMF was added thereto. The obtained mixture was stirred at the same temperature for 7 hours. After adding water, the liquid reaction mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate. After evaporating the solvent, the obtained residue was subjected to silica gel column chromatography. Thus, 899 mg (99.8% ee) of the title compound was obtained as a yellow oily substance. Various spectral data was identical with those described in Japanese Patent No. 2,769,174.

後処理

  1. customthe liquid reaction mixture
  2. extractionwas extracted with ethyl acetate
  3. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  4. customAfter evaporating the solvent

出典と根拠

ORDレコード
ord-09aad72a49c54100a1770b7ca03a3bcc
出典データセット
uspto-grants-2006_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07087778B2

反応ノート

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