Hydrochloric Acid → 1-[3-Ethoxy-4-(trifluoromethyl)phenyl]ethanone

HRID 1293592ノート

反応式

HRID 1293592 の反応式
[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([CH:13]=[CH:14][C:15]=1[C:16]([F:19])([F:18])[F:17])[C:7](N(OC)C)=[O:8])[CH3:2].[CH3:20][Mg]Br.Cl>C1COCC1.CC(OC)(C)C>[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([C:7](=[O:8])[CH3:20])[CH:13]=[CH:14][C:15]=1[C:16]([F:17])([F:18])[F:19])[CH3:2]

参加物

6

反応物 3

HCID 313Hydrochloric AcidHCID 86607991HCID 86607991、化合物HCID 178418573HCID 178418573、化合物

生成物 1

HCID 666503361-[3-Ethoxy-4-(trifluoromethyl)phenyl]ethanone

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 15413tert-Butyl methyl ether溶媒

反応条件

温度
0 °C

実験手順

To a solution of 3-ethoxy-N-methoxy-N-methyl-4-trifluoromethyl-benzamide from step 7 (15.96 g, 58 mmol) in THF (182 mL) at −5° C. was added methylmagnesium bromide (3 M in Et2O, 38.37 mL, 115 mmol). The mixture was stirred at 0° C. for 15 min, then warmed up to 23° C., stirring was continued for further 3 h at 23° C. Cooled to 0° C., 1 N HCl (274 mL) was added dropwise, stirring was continued at 23° C. for 15 min, the mixture was diluted with TBME, the phases were separated, the organic layer was washed with water and brine, dried over MgSO4. Removal of the solvent in vacuum left a yellow solid (13.10 g, 98%), which was used without further purification. MS (EI) 232.2 [M].

後処理

  1. temperaturewarmed up to 23° C.
  2. stirringstirring
  3. waitwas continued for further 3 h at 23° C
  4. temperatureCooled to 0° C.
  5. stirringstirring
  6. waitwas continued at 23° C. for 15 min
  7. customthe phases were separated
  8. washthe organic layer was washed with water and brine
  9. dry with materialdried over MgSO4
  10. customRemoval of the solvent in vacuum
  11. waitleft a yellow solid (13.10 g, 98%), which
  12. customwas used without further purification

出典と根拠

ORDレコード
ord-8f1a3d89e20643e4b1c63da39b662136
出典データセット
uspto-grants-2007_07
特許番号
US07238808B2

反応ノート

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