Methyl iodide → (3aSR,6aRS)-3-Methyl-2-oxo-hexahydro-cyclopentaimidazole-1-carboxylic acid tert-butyl ester

HRID 1894237ノート

反応式

HRID 1894237 の反応式
[C:1]([O:5][C:6]([N:8]1[CH:12]2[CH2:13][CH2:14][CH2:15][CH:11]2[NH:10][C:9]1=[O:16])=[O:7])([CH3:4])([CH3:3])[CH3:2].[H-].[Na+].I[CH3:20]>CN(C=O)C>[C:1]([O:5][C:6]([N:8]1[CH:12]2[CH2:13][CH2:14][CH2:15][CH:11]2[N:10]([CH3:20])[C:9]1=[O:16])=[O:7])([CH3:4])([CH3:2])[CH3:3]

参加物

5

反応物 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 67437675(3aSR, 6aRS)-2-oxo-hexahydro-cyclopentaimidazole-1-carboxylic acid tert-butyl ester

生成物 1

HCID 67437672(3aSR,6aRS)-3-Methyl-2-oxo-hexahydro-cyclopentaimidazole-1-carboxylic acid tert-butyl ester収率 106.1%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a solution of (3aSR,6aRS)-2-oxo-hexahydro-cyclopentaimidazole-1-carboxylic acid tert-butyl ester (Example 106, step 1) (1.82 g, 8.04 mmol) in 30 ml of DMF was added a 60% suspension of sodium hydride in mineral oil (386 mg, 9.65 mmol, 1.2 equiv.). The suspension was stirred for 45 minutes at room temperature (gas evolution), then iodomethane (0.604 ml, 9.65 mmol, 1.2 equiv.) was added and the mixture was stirred at room temperature overnight. After concentration in vacuo and workup with ethyl acetate/water, 2.05 g of a yellow oil were obtained containing mineral-oil drops which was directly used in the next step without further characterisation.

後処理

  1. stirringthe mixture was stirred at room temperature overnight
  2. concentrationAfter concentration in vacuo and workup with ethyl acetate/water

出典と根拠

ORDレコード
ord-62f8fed9e70a41f080069d4bc83ad1d5
出典データセット
uspto-grants-2013_08
特許番号
US08513273B2

反応ノート

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