O-Methylhydroxylamine hydrochloride → 2-(3,4-dichloro-phenyl)-3-(3-methoxyimino-cyclopentyl)-N-thiazol-2-yl-propionamide

HRID 2214117ノート

反応式

HRID 2214117 の反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]([CH2:18][CH:19]2[CH2:23][CH2:22][C:21](=O)[CH2:20]2)[C:10]([NH:12][C:13]2[S:14][CH:15]=[CH:16][N:17]=2)=[O:11])[CH:5]=[CH:6][C:7]=1[Cl:8].Cl.[CH3:26][O:27][NH2:28]>CO.N1C=CC=CC=1>[Cl:1][C:2]1[CH:3]=[C:4]([CH:9]([CH2:18][CH:19]2[CH2:23][CH2:22][C:21](=[N:28][O:27][CH3:26])[CH2:20]2)[C:10]([NH:12][C:13]2[S:14][CH:15]=[CH:16][N:17]=2)=[O:11])[CH:5]=[CH:6][C:7]=1[Cl:8]

参加物

5

反応物 2

HCID 521874O-Methylhydroxylamine hydrochlorideHCID 100000032-(3,4-dichloro-phenyl)-3-(3-oxo-cyclopentyl)-N-thiazol-2-yl-propionamide

生成物 1

HCID 730821042-(3,4-dichloro-phenyl)-3-(3-methoxyimino-cyclopentyl)-N-thiazol-2-yl-propionamide収率 99.5%

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 1049Pyridine溶媒

反応条件

温度
25 °C

実験手順

A solution of the 2-(3,4-dichloro-phenyl)-3-(3-oxo-cyclopentyl)-N-thiazol-2-yl-propionamide (prepared as in Example 43, 159.9 mg, 0.41 mmol) and methoxyamine hydrochloride (52.3 mg, 0.62 mmol) in methanol (1.2 mL) and pyridine (1.2 mL) was heated under reflux for 3.5 h. The reaction mixture was allowed to cool to 25° C. and then concentrated in vacuo. The resulting residue was diluted with ethyl acetate (75 mL), washed with a 1N aqueous hydrochloric acid solution (75 mL) and a saturated aqueous sodium chloride solution (75 mL), dried over sodium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230–400 mesh, 50% ethyl acetate/hexanes) afforded 2-(3,4-dichloro-phenyl)-3-(3-methoxyimino-cyclopentyl)-N-thiazol-2-yl-propionamide (168.2 mg, 98%) as a white foam: mp 69–72° C. (foam to gel); (ES)+-HRMS m/e calcd for C18H19Cl2N3O2S (M+H)+ 412.0648 found 412.0652.

後処理

  1. temperatureunder reflux for 3.5 h
  2. concentrationconcentrated in vacuo
  3. additionThe resulting residue was diluted with ethyl acetate (75 mL)
  4. washwashed with a 1N aqueous hydrochloric acid solution (75 mL)
  5. dry with materiala saturated aqueous sodium chloride solution (75 mL), dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-8ca03f760ba44590b569163a1f428163
出典データセット
uspto-grants-2006_09
特許番号
US07105671B2

反応ノート

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