1-Pentene, 5-bromo- → Methyl 4-(pent-4-en-1-yl)-1-(tert-butoxycarbonyl)piperidine-4-carboxylate

HRID 8744

反応式

HRID 8744 の反応式
C[Si]([N-][Si](C)(C)C)(C)C.[K+].[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][CH:21]([C:24]([O:26][CH3:27])=[O:25])[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12].Br[CH2:29][CH2:30][CH2:31][CH:32]=[CH2:33].C(=O)(O)[O-].[Na+]>O1CCCC1>[CH2:33]([C:21]1([C:24]([O:26][CH3:27])=[O:25])[CH2:22][CH2:23][N:18]([C:16]([O:15][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:17])[CH2:19][CH2:20]1)[CH2:32][CH2:31][CH:30]=[CH2:29]

参加物

6

反応物 4

HCID 707041-Pentene, 5-bromo-HCID 3928701-N-Boc-4-Piperidinecarboxylic acid methyl esterHCID 516892Sodium BicarbonateHCID 3251421Potassium bis(trimethylsilyl)amide

生成物 1

HCID 11232181Methyl 4-(pent-4-en-1-yl)-1-(tert-butoxycarbonyl)piperidine-4-carboxylate収率 99.2%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

To a solution of potassium bis(trimethylsilyl)amide (30.7 g, 0.15 mol) in tetrahydrofuran (750 mL) at 0° C. was added a solution of methyl 1-(tert-butoxycarbonyl)piperidine-4-carboxylate (25 g, 0.10 mol) from Step A in tetrahydrofuran (250 mL) and the reaction mixture was stirred for 1 h. 5-Bromo-1-pentene (19.4 mL, 0.164 mol) was added and the reaction mixture was allowed to warm to room temperature for 1.5 h. The reaction mixture was then poured into saturated sodium bicarbonate solution and extracted three times with ethyl acetate. The organic layers were combined and washed with brine, dried over sodium sulfate, filtered, and concentrated to afford the title compound (30.9 g) which was used in the next step without further purification.

後処理

  1. extractionextracted three times with ethyl acetate
  2. washwashed with brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-292d55b0aa854c219dbd269febe9a838
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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