Ethyl bromoacetate → N-[3-(4-tert-Butylcyclohexan-1-yl)phenyl]-4-ethoxycarbonylmethyloxy-3-methoxyphenylacetamide

HRID 7074

反応式

HRID 7074 の反応式
[C:1]([CH:5]1[CH2:10][CH2:9][CH:8]([C:11]2[CH:12]=[C:13]([NH:17][C:18](=[O:29])[CH2:19][C:20]3[CH:25]=[CH:24][C:23]([OH:26])=[C:22]([O:27][CH3:28])[CH:21]=3)[CH:14]=[CH:15][CH:16]=2)[CH2:7][CH2:6]1)([CH3:4])([CH3:3])[CH3:2].Br[CH2:31][C:32]([O:34][CH2:35][CH3:36])=[O:33].C(=O)([O-])[O-].[K+].[K+]>CC(C)=O>[C:1]([CH:5]1[CH2:10][CH2:9][CH:8]([C:11]2[CH:12]=[C:13]([NH:17][C:18](=[O:29])[CH2:19][C:20]3[CH:25]=[CH:24][C:23]([O:26][CH2:31][C:32]([O:34][CH2:35][CH3:36])=[O:33])=[C:22]([O:27][CH3:28])[CH:21]=3)[CH:14]=[CH:15][CH:16]=2)[CH2:7][CH2:6]1)([CH3:4])([CH3:2])[CH3:3]

参加物

5

反応物 3

HCID 7748Ethyl bromoacetateHCID 11430Potassium CarbonateHCID 22019581N-[3-(4-tert-Butylcyclohexan-1-yl)phenyl]-4-hydroxy-3-methoxyphenylacetamide

生成物 1

HCID 22019615N-[3-(4-tert-Butylcyclohexan-1-yl)phenyl]-4-ethoxycarbonylmethyloxy-3-methoxyphenylacetamide収率 75.8%

試薬・触媒・溶媒 1

HCID 180Acetone溶媒

実験手順

N-[3-(4-tert-butylcyclohexan-1-yl)phenyl]-4-hydroxy-3-methoxyphenylacetamide (130 mg) and ethyl bromoacetate (84 mg) are dissolved in acetone, and thereto is added potassium carbonate (180 mg), and the reaction solution is heated under reflux for 18 hours. The reaction solution is filtered, and the filtrate is concentrated. The residue is purified by silica gel column chromatography (eluent: gradient from 0% to 100% hexane/ethyl acetate) to give N-[3-(4-tert-butylcyclohexan-1-yl)phenyl]-4-ethoxycarbonylmethyloxy 3-methoxyphenylacetamide (120 mg). This product is dissolved in methanol (2 ml), and thereto is added 2 M aqueous sodium hydroxide solution (1 ml), and the mixture is stirred at 25° C. for 1 hour. The mixture is neutralized with acetic acid, and water is added thereto. The mixture is extracted with chloroform, and the organic layer is dried over sodium sulfate. The solvent is evaporated under reduced pressure, and the residue is purified by silica gel column chromatography (eluent: gradient from 0% to 25% chloroform/methanol) to give the desired compound (45 mg).

後処理

  1. temperaturethe reaction solution is heated
  2. temperatureunder reflux for 18 hours
  3. filtrationThe reaction solution is filtered
  4. concentrationthe filtrate is concentrated
  5. customThe residue is purified by silica gel column chromatography (eluent: gradient from 0% to 100% hexane/ethyl acetate)

出典と根拠

ORDレコード
ord-c144e12b7636471bb89c322c897a8c5d
出典データセット
uspto-grants-2006_08
特許番号
US07084176B2

関連ノート

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