Ethyl orthoformate → benzyl 4-[(1R,2S)-2-(2-{[3-methyl-5-(1H-tetrazol-1-yl)pyridin-2-yl]oxy}ethyl)cyclopropyl]piperidine-1-carboxylate

HRID 1850751ノート

反応式

HRID 1850751 の反応式
[NH2:1][C:2]1[CH:3]=[C:4]([CH3:30])[C:5]([O:8][CH2:9][CH2:10][C@@H:11]2[CH2:13][C@@H:12]2[CH:14]2[CH2:19][CH2:18][N:17]([C:20]([O:22][CH2:23][C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=3)=[O:21])[CH2:16][CH2:15]2)=[N:6][CH:7]=1.[N-:31]=[N+:32]=[N-:33].[Na+].[CH:35](OCC)(OCC)OCC>C(O)(=O)C>[CH3:30][C:4]1[C:5]([O:8][CH2:9][CH2:10][C@@H:11]2[CH2:13][C@@H:12]2[CH:14]2[CH2:19][CH2:18][N:17]([C:20]([O:22][CH2:23][C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=3)=[O:21])[CH2:16][CH2:15]2)=[N:6][CH:7]=[C:2]([N:1]2[CH:35]=[N:33][N:32]=[N:31]2)[CH:3]=1

参加物

5

反応物 3

HCID 31214Ethyl orthoformateHCID 33557Sodium AzideHCID 70856037benzyl 4-((1R,2S)-2-{2-[(5-amino-3-methylpyridin-2-yl)oxy]ethyl}cyclopropyl)piperidine-1-carboxylate

生成物 1

HCID 66563379benzyl 4-[(1R,2S)-2-(2-{[3-methyl-5-(1H-tetrazol-1-yl)pyridin-2-yl]oxy}ethyl)cyclopropyl]piperidine-1-carboxylate

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

反応条件

温度
60 °C

実験手順

To a solution of benzyl 4-((1R,2S)-2-{-[(5-amino-3-methylpyridin-2-yl)oxy]ethyl}cyclopropyl)piperidine-1-carboxylate (1.20 g, 2.93 mmol) in acetic acid (50 mL) was added sodium azide (762 mg, 11.72 mmol) followed by triethyl orthoformate (1.95 mL, 11.72 mmol) and the resulting solution was heated to 60° C. and stirred for 3 hours. The volatiles were removed in vacuo and the residue was partitioned between NaHCO3 and ethyl acetate. The aqueous was again extracted with ethyl acetate (100 mL). The organics were combined, washed by brine, dried on sodium sulfate, filtered, and the filtrate concentrated under reduced pressure. The residue was purified on Biotage column (40 M+ silica gel) using a gradient eluant of 0-100% ethyl acetate in hexane (800 ml) to afford the title compound. LC/MS (m/z): 463 (M+H)+.

後処理

  1. customThe volatiles were removed in vacuo
  2. customthe residue was partitioned between NaHCO3 and ethyl acetate
  3. extractionThe aqueous was again extracted with ethyl acetate (100 mL)
  4. washwashed by brine
  5. customdried on sodium sulfate
  6. filtrationfiltered
  7. concentrationthe filtrate concentrated under reduced pressure
  8. customThe residue was purified on Biotage column (40 M+ silica gel)

出典と根拠

ORDレコード
ord-5f2c0ec0d9a94b4e8071035787d3341a
出典データセット
uspto-grants-2015_02
特許番号
US08957062B2

反応ノート

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