反応式
[H-].[Na+].[CH2:3]([C:10]1[CH:17]=[CH:16][CH:15]=[CH:14][C:11]=1[CH2:12][OH:13])[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.Br.[CH2:19]([O:21][C:22]([C@@H:24]1[CH2:29][CH2:28][CH2:27][N:26]([CH2:30][CH2:31]Br)[CH2:25]1)=[O:23])[CH3:20]>C1COCC1>[CH2:19]([O:21][C:22]([C@@H:24]1[CH2:29][CH2:28][CH2:27][N:26]([CH2:30][CH2:31][O:13][CH2:12][C:11]2[CH:14]=[CH:15][CH:16]=[CH:17][C:10]=2[CH2:3][C:4]2[CH:5]=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:25]1)=[O:23])[CH3:20]参加物
実験手順
Sodium hydride (2.1 g, 53 mmol, 60% oil dispersion) was added portionwise to a stirred solution of 2-benzylbenzylalcohol (5.0 g, 25 mmol) in dry THF (125 ml) placed under an atmosphere of nitrogen. The mixture was heated at reflux for 1 h and then allowed to cool to ambient temperature within 30 minutes. (R)-1-(2-Bromoethyl)-3-piperidinecarboxylic acid ethyl ester hydrobromide (8.6 g, 25 mmol, EP 374801) was added and the mixture was stirred for 2 days at ambient temperature. The reaction mixture was diluted with THF (100 ml) and filtered. The solvent was evaporated in vacuo to give an oily residue which was purified by column chromatography (700 g, heptane/ethyl acetate=1/1) to give 0.8 g of (R)-1-(2-(2-benzylbenzyloxy)ethyl)-3-piperidinecarboxylic acid ethyl ester as an oil.
後処理
- temperatureThe mixture was heated
- temperatureat reflux for 1 h
- filtrationfiltered
- customThe solvent was evaporated in vacuo
- customto give an oily residue which
- customwas purified by column chromatography (700 g, heptane/ethyl acetate=1/1)
出典と根拠
- ORDレコード
- ord-d6f6c692759448d6b8358f840d6520db
- 出典データセット
- uspto-grants-1997_02
- 特許番号
- US05604242
関連ノート
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