Water → 3-((R)-1-Benzyl-5-oxopyrrolidine-2-carboxamido)-2-hydroxy-4-phenylbutanoic Acid

HRID 882842ノート

反応式

HRID 882842 の反応式
[CH2:1]([N:8]1[C:12](=[O:13])[CH2:11][CH2:10][C@@H:9]1[C:14]([NH:16][CH:17]([CH2:25][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[CH:18]([OH:24])[C:19]([O:21]CC)=[O:20])=[O:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH-].[Na+].O>C(O)C>[CH2:1]([N:8]1[C:12](=[O:13])[CH2:11][CH2:10][C@@H:9]1[C:14]([NH:16][CH:17]([CH2:25][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[CH:18]([OH:24])[C:19]([OH:21])=[O:20])=[O:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

参加物

5

反応物 3

HCID 962WaterHCID 14798Sodium HydroxideHCID 66644659Ethyl 3-((R)-1-benzyl-5-oxopyrrolidine-2-carboxamido)-2-hydroxy-4-phenylbutanoate

生成物 1

HCID 666445723-((R)-1-Benzyl-5-oxopyrrolidine-2-carboxamido)-2-hydroxy-4-phenylbutanoic Acid

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒

反応条件

温度
50 °C

実験手順

Ethyl 3-((R)-1-benzyl-5-oxopyrrolidine-2-carboxamido)-2-hydroxy-4-phenylbutanoate (4550 mg raw material from previous step 22.1; max. 10.72 mmol) dissolved in 13 ml of ethanol was treated with 6.43 ml 2N aq. NaOH overnight at room temperature. To complete the reaction, the mixture was then heated to 50° C. for 2 h. Water was added followed by extraction with MTBE (3×). The aqueous layer was acidified to pH 3 using 2M HCl and extracted three times with dichloromethane. The combined dichloromethane layers were then successively washed with water and brine, dried over Na2SO4 and the solvent was removed under reduced pressure. The title compound was obtained as a pale brown powder (2450 mg, yield: 58%). ESI-MS [M+H]+=397.2.

後処理

  1. customthe reaction
  2. extractionfollowed by extraction with MTBE (3×)
  3. extractionextracted three times with dichloromethane
  4. washThe combined dichloromethane layers were then successively washed with water and brine
  5. dry with materialdried over Na2SO4
  6. customthe solvent was removed under reduced pressure

出典と根拠

ORDレコード
ord-a21fc8d0817642c3bccfb7261fdb1f97
出典データセット
uspto-grants-2012_08
特許番号
US08236798B2

反応ノート

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