Ethyl Acetate → 1-(5-Methyl-1H-indazol-4-ylamino)-6-fluoro-4,4-dimethyl-2-(trifluoromethyl)-1,2,3,4-tetrahydro-naphthalene-2,5-diol

HRID 1869406ノート

反応式

HRID 1869406 の反応式
[F:1][C:2]([F:31])([F:30])[C:3]([CH:18]=[N:19][C:20]1[C:28]([CH3:29])=[CH:27][CH:26]=[C:25]2[C:21]=1[CH:22]=[N:23][NH:24]2)([OH:17])[CH2:4][C:5]([C:8]1[CH:13]=[CH:12][CH:11]=[C:10]([F:14])[C:9]=1[O:15]C)([CH3:7])[CH3:6].B(Br)(Br)Br.C(=O)(O)[O-].[Na+].C(OCC)(=O)C>ClCCl>[CH3:29][C:28]1[C:20]([NH:19][CH:18]2[C:13]3[CH:12]=[CH:11][C:10]([F:14])=[C:9]([OH:15])[C:8]=3[C:5]([CH3:6])([CH3:7])[CH2:4][C:3]2([C:2]([F:31])([F:30])[F:1])[OH:17])=[C:21]2[C:25](=[CH:26][CH:27]=1)[NH:24][N:23]=[CH:22]2

参加物

6

反応物 4

HCID 8857Ethyl AcetateHCID 25134Boron tribromideHCID 516892Sodium BicarbonateHCID 686820761,1,1-Trifluoro-4-(3-fluoro-2-methoxyphenyl)-4-methyl-2-[(5-methyl-1H-indazol-4-ylimino)-methyl]-pentan-2-ol

生成物 1

HCID 865999241-(5-Methyl-1H-indazol-4-ylamino)-6-fluoro-4,4-dimethyl-2-(trifluoromethyl)-1,2,3,4-tetrahydro-naphthalene-2,5-diol

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

1,1,1-Trifluoro-4-(3-fluoro-2-methoxyphenyl)-4-methyl-2-[(5-methyl-1H-indazol-4-ylimino)-methyl]-pentan-2-ol (150 mg, 0.34 mmol) is mixed with boron tribromide (3.40 ml of a 1 M solution in dichloromethane, 3.4 mmol) at room temperature. After 4 hours at room temperature, the reaction mixture is allowed to stand overnight at −30° C., then saturated sodium bicarbonate solution and ethyl acetate are added. It is extracted with ethyl acetate, and the combined organic phases are washed with saturated sodium chloride solution and dried on sodium sulfate. After the solvent is removed in a vacuum as well as purification by means of preparative thin-layer chromatography on silica gel with hexane/ethyl acetate (50% ethyl acetate), 56 mg (39% of theory) of the product is obtained.

後処理

  1. waitto stand overnight at −30° C.
  2. extractionIt is extracted with ethyl acetate
  3. washthe combined organic phases are washed with saturated sodium chloride solution
  4. customdried on sodium sulfate
  5. customAfter the solvent is removed in a vacuum as
  6. customwell as purification by means of preparative thin-layer chromatography on silica gel with hexane/ethyl acetate (50% ethyl acetate), 56 mg (39% of theory) of the product
  7. customis obtained

出典と根拠

ORDレコード
ord-76dd19cc922a462499c1bdccb077dbdb
出典データセット
uspto-grants-2009_12
特許番号
US07638515B2

反応ノート

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