Iodoethane → benzyl (S)-N-ethylpyrrolidine-2-carboxylate

HRID 927987

反応式

HRID 927987 の反応式
I[CH2:2][CH3:3].[NH:4]1[CH2:8][CH2:7][CH2:6][C@H:5]1[C:9]([O:11][CH2:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=[O:10].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.O>[CH2:2]([N:4]1[CH2:8][CH2:7][CH2:6][C@H:5]1[C:9]([O:11][CH2:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)=[O:10])[CH3:3]

参加物

6

反応物 3

HCID 6340IodoethaneHCID 11430Potassium CarbonateHCID 736155Benzyl L-prolinate

生成物 1

HCID 10421496benzyl (S)-N-ethylpyrrolidine-2-carboxylate収率 56.6%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

Iodoethane (1.34 g) was added to a mixture of benzyl (S)-pyrrolidine-2-carboxylate (1.0 g) and potassium carbonate (1.77 g) in dry DMF (7 mL) and the resultant mixture was stirred at room temperature for 3 days. The mixture was diluted with water, extracted with ethyl acetate, washed with water, dried (MgSO4) and filtered. The filtrate was evaporated to dryness and the residue was purified by chromatography on silica, eluting with a mixture of ethyl acetate and pentane with a gradient of 10-20% to give benzyl (S)—N-ethylpyrrolidine-2-carboxylate (0.643 g) as a pale straw coloured oil.

後処理

  1. extractionextracted with ethyl acetate
  2. washwashed with water
  3. dry with materialdried (MgSO4)
  4. filtrationfiltered
  5. customThe filtrate was evaporated to dryness
  6. customthe residue was purified by chromatography on silica
  7. washeluting with a mixture of ethyl acetate and pentane with a gradient of 10-20%

出典と根拠

ORDレコード
ord-b0c189607e2846e6931b6cd459974696
出典データセット
uspto-grants-2016_03
特許番号
US09290472B2

関連ノート

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