Hydrochloric Acid → 4-[4-(3,5-dichloro-phenyl)-4-trifluoromethyl-4,5-dihydro-3H-pyrrol-2-yl]-2-methyl-benzoic acid

HRID 1844635ノート

反応式

HRID 1844635 の反応式
C([O:3][C:4](=[O:29])[C:5]1[CH:10]=[CH:9][C:8]([CH:11]2[CH2:15][C:14]([C:20]3[CH:25]=[C:24]([Cl:26])[CH:23]=[C:22]([Cl:27])[CH:21]=3)([C:16]([F:19])([F:18])[F:17])[CH:13]=[N:12]2)=[CH:7][C:6]=1[CH3:28])C.[OH-].[Na+].Cl.C(OCC)(=O)C>C(O)C.O>[Cl:27][C:22]1[CH:21]=[C:20]([C:14]2([C:16]([F:18])([F:19])[F:17])[CH2:13][N:12]=[C:11]([C:8]3[CH:9]=[CH:10][C:5]([C:4]([OH:29])=[O:3])=[C:6]([CH3:28])[CH:7]=3)[CH2:15]2)[CH:25]=[C:24]([Cl:26])[CH:23]=1

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 8857Ethyl AcetateHCID 14798Sodium HydroxideHCID 672174284-[4-(3,5-dichloro-phenyl)-4-trifluoromethyl-3,4-dihydro-2H-pyrrol-2-yl]-2-methyl-benzoic acid ethyl ester

生成物 1

HCID 675067894-[4-(3,5-dichloro-phenyl)-4-trifluoromethyl-4,5-dihydro-3H-pyrrol-2-yl]-2-methyl-benzoic acid収率 77%

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 962Water溶媒2 回

実験手順

To a solution of 4-[4-(3,5-dichloro-phenyl)-4-trifluoromethyl-3,4-dihydro-2H-pyrrol-2-yl]-2-methyl-benzoic acid ethyl ester (Example I5) (2.8 g) in ethanol (40 ml) was added a solution of sodium hydroxide (0.51 g) in water (15 ml). The reaction mixture was stirred at reflux for 1 hour. After cooling to ambient temperature aqueous hydrochloric acid (1M) (20 ml), water (150 ml) and ethyl acetate (200 ml) was added. The phases were separated and the organic phase was washed with brine, dried over sodium sulfate and concentrated. The residue was recrystallised from diisopropyl ether to give 4-[4-(3,5-dichloro-phenyl)-4-trifluoromethyl-4,5-dihydro-3H-pyrrol-2-yl]-2-methyl-benzoic acid (2.02 g) as a white solid. 1H-NMR (d6-DMSO, 400 MHz): 13.07 (s, 1H), 7.91-7.58 (m, 6H), 4.85 (d, 1H), 4.44 (d, 1H), 3.92-3.35 (m, 2H), 2.58 (s, 3H) ppm.

後処理

  1. temperatureat reflux for 1 hour
  2. additionwas added
  3. customThe phases were separated
  4. washthe organic phase was washed with brine
  5. dry with materialdried over sodium sulfate
  6. concentrationconcentrated
  7. customThe residue was recrystallised from diisopropyl ether

出典と根拠

ORDレコード
ord-d458e394f85042ac80ccee90af097d81
出典データセット
uspto-grants-2015_02
特許番号
US08946447B2

反応ノート

読み込み中…