Water → 5-(6,7-Dimethoxyquinazolin-4-yloxy)-2,4-difluoroaniline

HRID 871645ノート

反応式

HRID 871645 の反応式
C(=O)([O-])[O-].[Cs+].[Cs+].[NH2:7][C:8]1[C:9]([F:16])=[CH:10][C:11]([F:15])=[C:12]([OH:14])[CH:13]=1.Cl[C:18]1[C:27]2[C:22](=[CH:23][C:24]([O:30][CH3:31])=[C:25]([O:28][CH3:29])[CH:26]=2)[N:21]=[CH:20][N:19]=1.O>CN(C=O)C>[CH3:29][O:28][C:25]1[CH:26]=[C:27]2[C:22](=[CH:23][C:24]=1[O:30][CH3:31])[N:21]=[CH:20][N:19]=[C:18]2[O:14][C:12]1[C:11]([F:15])=[CH:10][C:9]([F:16])=[C:8]([CH:13]=1)[NH2:7]

参加物

6

反応物 4

HCID 962WaterHCID 10796Cesium carbonateHCID 27693644-Chloro-6,7-dimethoxyquinazolineHCID 27829995-Amino-2,4-difluorophenol

生成物 1

HCID 668767545-(6,7-Dimethoxyquinazolin-4-yloxy)-2,4-difluoroaniline

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

To a stirred suspension of cesium carbonate (3.25 g, 10.0 mmoles) in dry DMF (20 mL) was added 5-amino-2,4-difluorophenol (1.00 g, 6.9 mmoles). This solution was heated to 80° C. for 1 hour, and 4-chloro-6,7-dimethoxyquinazoline (1.59 g, 7.1 mmoles) was added and the reaction heated for an additional hour. At the end of this time the reaction was poured into water (200 mL) and extracted with two portions (200 mL) of ethyl acetate. The extracts were combined and dried over MgSO4. Filtration and concentration afforded 5-(6,7-dimethoxyquinazolin-4-yloxy)-2,4-difluoroaniline as a crude red oil. Purification by silica gel chromatography eluting with an ethyl acetate/hexane gradient, 30%-70% over 70 minutes gave a slightly impure oil containing DMF. This oil was crystallized using ethyl acetate hexane to give a white solid.

後処理

  1. temperaturethe reaction heated for an additional hour
  2. extractionextracted with two portions (200 mL) of ethyl acetate
  3. dry with materialdried over MgSO4
  4. filtrationFiltration and concentration

出典と根拠

ORDレコード
ord-641870b24ce9487baba2e59e125d8ed4
出典データセット
uspto-grants-2015_03
特許番号
US08969587B2

反応ノート

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