Sodium borohydride → (2R,5R)-5-[(1S,2S)-2-Amino-3-(3-chloro-5-fluorophenyl)-1-hydroxypropyl]-2-(2,2-dimethylpropoxy)-morpholine-4-carboxylic acid tert-butyl ester

HRID 20362

反応式

HRID 20362 の反応式
[C:1]([O:5][C:6]([N:8]1[C@@H:13]([C@@H:14]([OH:28])[C@@H:15]([N+:25]([O-])=O)[CH2:16][C:17]2[CH:22]=[C:21]([F:23])[CH:20]=[C:19]([Cl:24])[CH:18]=2)[CH2:12][O:11][C@@H:10]([O:29][CH2:30][C:31]([CH3:34])([CH3:33])[CH3:32])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[BH4-].[Na+]>CO.[Ni](Cl)Cl>[C:1]([O:5][C:6]([N:8]1[C@@H:13]([C@@H:14]([OH:28])[C@@H:15]([NH2:25])[CH2:16][C:17]2[CH:22]=[C:21]([F:23])[CH:20]=[C:19]([Cl:24])[CH:18]=2)[CH2:12][O:11][C@@H:10]([O:29][CH2:30][C:31]([CH3:34])([CH3:33])[CH3:32])[CH2:9]1)=[O:7])([CH3:2])([CH3:4])[CH3:3]

参加物

5

反応物 2

HCID 4311764Sodium borohydrideHCID 68562233(2R,5R)-5-[(1R,2S)-3-(3-Chloro-5-fluorophenyl)-1-hydroxy-2-nitropropyl]-2-(2,2-dimethylpropoxy)-morpholine-4-carboxylic acid tert-butyl ester

生成物 1

HCID 68561142(2R,5R)-5-[(1S,2S)-2-Amino-3-(3-chloro-5-fluorophenyl)-1-hydroxypropyl]-2-(2,2-dimethylpropoxy)-morpholine-4-carboxylic acid tert-butyl ester収率 100%

試薬・触媒・溶媒 2

HCID 24385Nickel Dichloride触媒HCID 887Methanol溶媒

実験手順

Dissolve (2R,5R)-5-[(1R,2S)-3-(3-chloro-5-fluorophenyl)-1-hydroxy-2-nitropropyl]-2-(2,2-dimethylpropoxy)-morpholine-4-carboxylic acid tert-butyl ester (0.455 g, 0.901 mmol) in methanol (8 mL) and stir at room temperature in an oil bath. Add anhydrous nickel (II) chloride (0.175 g, 1.35 mmol) followed by sodium borohydride (0.170 mg, 4.50 mmol) in 3 portions over 5 minutes and stir for 15 minutes. Add water (2 mL), 0.1 N sodium hydroxide (2 mL) and extract with ethyl acetate (2×30 mL). Combine organic extracts, wash with saturated aqueous sodium chloride (30 mL), dry (sodium sulfate), filter through a pad of Celite® and concentrate to give the desired compound as a colorless oil (0.428 g).

後処理

  1. stirringstir for 15 minutes
  2. extractionAdd water (2 mL), 0.1 N sodium hydroxide (2 mL) and extract with ethyl acetate (2×30 mL)
  3. washCombine organic extracts, wash with saturated aqueous sodium chloride (30 mL)
  4. dry with materialdry (sodium sulfate)
  5. filtrationfilter through a pad of Celite®
  6. concentrationconcentrate

出典と根拠

ORDレコード
ord-8f93c0006e9041f8b7a31052bf892019
出典データセット
uspto-grants-2010_06
特許番号
US07745438B2

関連ノート

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