反応式
C[Si]([N-][Si](C)(C)C)(C)C.[K+].[CH3:11][O:12][C:13]([CH:15]1[CH2:20][CH2:19][N:18]([C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:17][CH2:16]1)=[O:14].Br[CH2:29][CH2:30][O:31][Si:32]([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33].C(=O)(O)[O-].[Na+]>C1COCC1>[CH3:11][O:12][C:13]([C:15]1([CH2:29][CH2:30][O:31][Si:32]([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33])[CH2:16][CH2:17][N:18]([C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:19][CH2:20]1)=[O:14]参加物
6
反応物 4
生成物 1
試薬・触媒・溶媒 1
実験手順
To a solution of KHMDS (8.72 g, 44 mmol) in THF (300 mL) at −70° C. was slowly added over 10 min a solution of tert-butyl 4-methoxycarbonylpiperidine-1-carboxylate (7.1 g, 29 mmol) in THF (70 mL). After 1 h, 2-bromo-1-(tert-butyldimethylsilyloxy)ethane (10 g, 47 mmol) was added and the reaction was allowed to warm to room temperature for 1 h. The mixture was poured into aq. sodium bicarbonate solution and extracted three times with ethyl acetate. The combined organic layers were washed with brine, dried over sodium sulfate, filtered, and concentrated. The residue was used directly in the next step. TLC (50% ethyl acetate in hexanes) indicated a mixture of bromide starting material and title product.
後処理
- extractionextracted three times with ethyl acetate
- washThe combined organic layers were washed with brine
- dry with materialdried over sodium sulfate
- filtrationfiltered
- concentrationconcentrated
- additiona mixture of bromide starting material and title product
出典と根拠
- ORDレコード
- ord-d0cc87cbef5e40de9f67dab66499498b
- 出典データセット
- uspto-grants-2006_08
- 特許番号
- US07091211B2
関連ノート
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