Acetic Acid → tert-butyl 5-(benzylamino)hexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate

HRID 1056631ノート

反応式

HRID 1056631 の反応式
O=[C:2]1[CH2:16][CH:5]2[CH2:6][N:7]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:8][CH:4]2[CH2:3]1.[CH2:17]([NH2:24])[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.CC(O)=O.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)Cl>[CH2:17]([NH:24][CH:2]1[CH2:16][CH:5]2[CH2:6][N:7]([C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:10])[CH2:8][CH:4]2[CH2:3]1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1

参加物

6

反応物 4

HCID 176Acetic AcidHCID 7504BenzylamineHCID 5049666Sodium triacetoxyborohydrideHCID 10998690tert-Butyl 5-oxohexahydrocyclopenta(c)pyrrole-2(1H)-carboxylate

生成物 1

HCID 69225608tert-butyl 5-(benzylamino)hexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate収率 55.3%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

反応条件

温度
0 °C

実験手順

To a solution of tert-butyl 5-oxohexahydrocyclopenta[c]pyrrole-2(1H)-carboxylate (9.57 g, 42.5 mmol) in DCM (170 mL) were added BnNH2 (4.56 g, 42.5 mmol) and AcOH (2.55 g, 42.5 mmol) at 0° C. and the reaction mixture was stirred at 0° C. for 0.5 h. Then NaBH(OAc)3 (18.00 g, 85.0 mmol) was added to the above mixture and the resulting mixture was stirred at rt for another 20 h, then quenched with saturated NaHCO3 solution (142 mL), and extracted with DCM (250 mL×3). The combined organic phases were washed with brine (250 mL×3), dried over anhydrous Na2SO4, concentrated in vacuo. The residue was purified by silica gel column chromatography (EtOAc) to give the title compound as a yellow solid (7.44 g, 55.3%).

後処理

  1. stirringthe resulting mixture was stirred at rt for another 20 h
  2. customquenched with saturated NaHCO3 solution (142 mL)
  3. extractionextracted with DCM (250 mL×3)
  4. washThe combined organic phases were washed with brine (250 mL×3)
  5. dry with materialdried over anhydrous Na2SO4
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by silica gel column chromatography (EtOAc)

出典と根拠

ORDレコード
ord-584136e711fc4879a0b1398d47ffa26d
出典データセット
uspto-grants-2016_07
特許番号
US09399637B2

反応ノート

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