Triethylamine → n-Formyl-l-leucine tert-butyl ester

HRID 1007569

反応式

HRID 1007569 の反応式
C(N(CC)CC)C.Cl.[C:9]([O:13][C:14](=[O:21])[C@H:15]([CH2:17][CH:18]([CH3:20])[CH3:19])[NH2:16])([CH3:12])([CH3:11])[CH3:10].[CH:22](OCC#N)=[O:23]>ClCCl>[C:9]([O:13][C:14](=[O:21])[C@H:15]([CH2:17][CH:18]([CH3:19])[CH3:20])[NH:16][CH:22]=[O:23])([CH3:12])([CH3:11])[CH3:10]

参加物

5

反応物 3

HCID 8471TriethylamineHCID 4205685(Formyloxy)acetonitrileHCID 12451443tert-butyl (2S)-2-amino-4-methylpentanoate hydrochloride

生成物 1

HCID 11160222n-Formyl-l-leucine tert-butyl ester

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

実験手順

The preparation was performed in analogy to W. Duczek et al., Synthesis, 37-38 (1996). A solution of 4.04 g (40 mmol) of triethylamine in 10 mL of dichloromethane was added to a solution of 8.94 g (40 mmol) of L-leucine tert-butyl ester hydrochloride and 3.4 g (40 mmol) of cyanomethyl formate in 60 mL of dichloromethane at 0° C. The reaction solution was allowed to warm to room temperature, stirred at room temperature overnight, and then washed twice with saturated NaCl solution. The phases were separated and the organic phase was dried over magnesium sulfate. The residue obtained after filtration and removal of the solvent in vacuo was distilled in vacuo. Yield: 7.5 g (87%). Boiling point: 118° C./2.7 Pa (0.02 torr).

後処理

  1. customDuczek et al., Synthesis, 37-38 (1996)
  2. washwashed twice with saturated NaCl solution
  3. customThe phases were separated
  4. dry with materialthe organic phase was dried over magnesium sulfate
  5. customThe residue obtained
  6. filtrationafter filtration and removal of the solvent in vacuo
  7. distillationwas distilled in vacuo

出典と根拠

ORDレコード
ord-9e9028be0e544e89848222ce1c80d7fa
出典データセット
uspto-grants-2004_09
特許番号
US06794517B2

関連ノート

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