Tetrahydrofuran → tert-Butyl cis(+/-)-4-{benzyl[(benzyloxy)carbonyl]amino}-3-methoxypiperidine-1-carboxylate

HRID 1425438ノート

反応式

HRID 1425438 の反応式
C1COCC1.[CH2:6]([NH:13][C@H:14]1[CH2:19][CH2:18][N:17]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:16][C@H:15]1[O:27][CH3:28])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.C(=O)(O)[O-].[Na+].Cl[C:35]([O:37][CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)=[O:36]>O>[CH2:6]([N:13]([C:35]([O:37][CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)=[O:36])[C@H:14]1[CH2:19][CH2:18][N:17]([C:20]([O:22][C:23]([CH3:24])([CH3:25])[CH3:26])=[O:21])[CH2:16][C@H:15]1[O:27][CH3:28])[C:7]1[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=1

参加物

6

反応物 4

HCID 8028TetrahydrofuranHCID 10387Benzyl chloroformateHCID 516892Sodium BicarbonateHCID 86648851Tert-butyl cis(+/-)-4-benzylamino-3-methoxypiperidine-1-carboxylate

生成物 1

HCID 86648850tert-Butyl cis(+/-)-4-{benzyl[(benzyloxy)carbonyl]amino}-3-methoxypiperidine-1-carboxylate収率 46.8%

試薬・触媒・溶媒 1

HCID 962Water溶媒2 回

実験手順

THF (16 mL) and water (4 mL) were added to tert-butyl cis(±)-4-benzylamino-3-methoxypiperidine-1-carboxylate obtained in Example (259a) (1.00 g, 3.1 mmol). While the mixture was stirred, saturated aqueous sodium bicarbonate solution (4 mL) and benzyl chloroformate (0.96 g, 5.6 mmol) were added at room temperature, followed by stirring overnight. The reaction solution was diluted with water, followed by extraction with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/9, 1/1) to obtain 0.66 g of the title compound as a colorless oily substance (58%).

後処理

  1. stirringby stirring overnight
  2. extractionfollowed by extraction with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/hexane=1/9, 1/1)

出典と根拠

ORDレコード
ord-30e7fc152c8241c8ac6f93333983c5c5
出典データセット
uspto-grants-2015_01
特許番号
US08927588B2

反応ノート

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