Hydrochloric Acid → 3-(4-Chloro-2-ethyl-6-fluorobenzofuran-7-yl)-6-trifluoromethyluracil

HRID 366314

反応式

HRID 366314 の反応式
[NH2:1]/[C:2](/[C:9]([F:12])([F:11])[F:10])=[CH:3]\[C:4]([O:6]CC)=O.C1CCN2C(=NCCC2)CC1.[Cl:24][C:25]1[C:30]2[CH:31]=[C:32]([CH2:34][CH3:35])[O:33][C:29]=2[C:28]([NH:36][C:37](OC2C=CC=CC=2)=[O:38])=[C:27]([F:46])[CH:26]=1.Cl>CN(C)C=O>[Cl:24][C:25]1[C:30]2[CH:31]=[C:32]([CH2:34][CH3:35])[O:33][C:29]=2[C:28]([N:36]2[C:4](=[O:6])[CH:3]=[C:2]([C:9]([F:10])([F:11])[F:12])[NH:1][C:37]2=[O:38])=[C:27]([F:46])[CH:26]=1

参加物

6

反応物 4

HCID 313Hydrochloric AcidHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 5702529Ethyl 3-amino-4,4,4-trifluorocrotonateHCID 232891804-Chloro-2-ethyl-6-fluoro-7-phenoxycarbonylaminobenzofuran

生成物 1

HCID 232891763-(4-Chloro-2-ethyl-6-fluorobenzofuran-7-yl)-6-trifluoromethyluracil収率 44%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
60 °C

実験手順

80 ml of N,N-dimethylformamide was added to 5.8 g (32 mmol) of ethyl 3-amino-4,4,4-trifluorocrotonate and 6.6 g (43 mmol) of 1,8-diazabicyclo[5.4.0]-7-undecene, and 9.6 g (29 mmol) of 4-chloro-2-ethyl-6-fluoro-7-phenoxycarbonylaminobenzofuran was gradually added thereto at room temperature. After stirring at 60° C. for 8 hours, the reaction solution was poured into a 10% hydrochloric acid aqueous solution and acidified, and then extracted with ethyl acetate. The organic layer was washed sequentially with water and a saturated sodium chloride aqueous solution and then dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure. Then, the obtained residue was purified by silica gel column chromatography to obtain 4.8 g (yield: 44%) of the desired product as white crystals. Melting point: 154-155° C.

後処理

  1. additionwas gradually added
  2. customat room temperature
  3. extractionextracted with ethyl acetate
  4. washThe organic layer was washed sequentially with water
  5. dry with materiala saturated sodium chloride aqueous solution and then dried over anhydrous magnesium sulfate
  6. distillationThe solvent was distilled off under reduced pressure
  7. customThen, the obtained residue was purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-8111caab964842e98b7fbc19b9ef2c26
出典データセット
uspto-grants-2000_10
特許番号
US06130187

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