3-Methylpyridine → (2S,5R)-6-benzyloxy-7-oxo-1,6-diaza-bicyclo[3.2.1]octane-2-carboxylic acid benzyl ester

HRID 73503

反応式

HRID 73503 の反応式
N1C=CC=C(C)C=1.C(O)(=O)[C:9](O)=[O:10].[CH2:14]([O:21][NH:22][C@H:23]1[CH2:28][NH:27][C@H:26]([C:29]([O:31][CH2:32][C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)=[O:30])[CH2:25][CH2:24]1)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.ClC(Cl)(OC(=O)OC(Cl)(Cl)Cl)Cl.C(=O)(O)[O-].[Na+]>ClCCl.O>[CH2:32]([O:31][C:29]([C@@H:26]1[CH2:25][CH2:24][C@@H:23]2[CH2:28][N:27]1[C:9](=[O:10])[N:22]2[O:21][CH2:14][C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)=[O:30])[C:33]1[CH:34]=[CH:35][CH:36]=[CH:37][CH:38]=1

参加物

7

反応物 4

HCID 79703-MethylpyridineHCID 94429TriphosgeneHCID 516892Sodium BicarbonateHCID 70673933Benzyl (2S,5R)-5-((benzyloxy)amino)piperidine-2-carboxylate oxalate

生成物 1

HCID 57389438(2S,5R)-6-benzyloxy-7-oxo-1,6-diaza-bicyclo[3.2.1]octane-2-carboxylic acid benzyl ester

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6344Dichloromethane溶媒2 回

反応条件

温度
0 °C

実験手順

3-picoline (45 ml, 464, 4 eq) was added to a slurry of benzyl (2S,5R)-5-[(benzyloxy)amino]piperidine-2-carboxylate ethanedioate (50 g, 116 mmol, 1 eq) in dichloromethane (1000 ml) at 0° C., followed by a solution of triphosgene (31.0 g, 104.4 mmol, 0.9 eq) in dichloromethane (200 ml). The mixture was stirred at 0° C. until the reaction was deemed to be complete. The reaction was quenched with a solution of sodium bicarbonate (24.4 g, 290 mmol, 2.5 eq) in water (300 ml), and the layers were separated. The aqueous layer was extracted with dichloromethane (100 ml) and the combined organic layers were washed with water. The organic layer was concentrated in vacuo to give (2S,5R)-6-benzyloxy-7-oxo-1,6-diaza-bicyclo[3.2.1]octane-2-carboxylic acid benzyl ester as a solution in dichloromethane.

後処理

  1. customthe layers were separated
  2. extractionThe aqueous layer was extracted with dichloromethane (100 ml)
  3. washthe combined organic layers were washed with water
  4. concentrationThe organic layer was concentrated in vacuo

出典と根拠

ORDレコード
ord-338dc3c7bae043a6b4044df29382baec
出典データセット
uspto-grants-2014_09
特許番号
US08829191B2

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