Phenol → [2,6-Dimethyl-4-(5-phenoxy-oxazolo[5,4-d]pyrimidin-2-yl)-phenoxy]-acetic acid tert-butyl ester

HRID 81384ノート

反応式

HRID 81384 の反応式
[H-].[Na+].[C:3]1([OH:9])[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:10]([O:14][C:15](=[O:36])[CH2:16][O:17][C:18]1[C:23]([CH3:24])=[CH:22][C:21]([C:25]2[O:26][C:27]3[N:28]=[C:29](Cl)[N:30]=[CH:31][C:32]=3[N:33]=2)=[CH:20][C:19]=1[CH3:35])([CH3:13])([CH3:12])[CH3:11]>CC(N(C)C)=O>[C:10]([O:14][C:15](=[O:36])[CH2:16][O:17][C:18]1[C:23]([CH3:24])=[CH:22][C:21]([C:25]2[O:26][C:27]3[N:28]=[C:29]([O:9][C:3]4[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=4)[N:30]=[CH:31][C:32]=3[N:33]=2)=[CH:20][C:19]=1[CH3:35])([CH3:13])([CH3:12])[CH3:11]

参加物

5

反応物 3

HCID 996PhenolHCID 24758Sodium hydrideHCID 86679893[4-(5-Chloro-oxazolo[5,4-d]pyrimidin-2-yl)-2,6-dimethyl-phenoxy]-acetic acid tert-butyl ester

生成物 1

HCID 86679894[2,6-Dimethyl-4-(5-phenoxy-oxazolo[5,4-d]pyrimidin-2-yl)-phenoxy]-acetic acid tert-butyl ester

試薬・触媒・溶媒 1

HCID 31374Dimethylacetamide溶媒2 回

実験手順

19 mg of sodium hydride were added under an argon atmosphere to a solution of 38 mg of phenol in 5 ml of dimethylacetamide. After stirring for 30 min at room temperature, a solution of 156 mg of [4-(5-chloro-oxazolo[5,4-d]pyrimidin-2-yl)-2,6-dimethyl-phenoxy]-acetic acid tert-butyl ester in 3 ml of dimethylacetamide was added slowly. The mixture was allowed to stir for 1.5 h at room temperature. Upon consumption of the starting ester an aqueous solution of citric acid (100 g/l) was added until the pH was neutral. The aqueous layer was extracted twice with 15 ml ethyl acetate. The combined organic layers were dried over sodium sulfate, filtered and the solvents were removed in vacuo. The title compound was isolated by silica gel chromatography (heptane/ethyl acetate gradient). Yield: 77 mg of a white solid.

後処理

  1. stirringto stir for 1.5 h at room temperature
  2. customUpon consumption of the starting ester an aqueous solution of citric acid (100 g/l)
  3. additionwas added until the pH
  4. extractionThe aqueous layer was extracted twice with 15 ml ethyl acetate
  5. dry with materialThe combined organic layers were dried over sodium sulfate
  6. filtrationfiltered
  7. customthe solvents were removed in vacuo

出典と根拠

ORDレコード
ord-5894b2320fdc46bc8dee19f753a981e8
出典データセット
uspto-grants-2014_09
特許番号
US08846692B2

反応ノート

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