1,2-Diaminocyclohexane, (+)- → ethyl 4-[4-[[(1S,2S)-2-aminocyclohexyl]amino]-1-piperidyl]-4-methyl-piperidine-1-carboxylate

HRID 1642467ノート

反応式

HRID 1642467 の反応式
[CH3:1][C:2]1([N:13]2[CH2:18][CH2:17][C:16](=O)[CH2:15][CH2:14]2)[CH2:7][CH2:6][N:5]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[CH2:4][CH2:3]1.[C@H:20]1([NH2:27])[CH2:25][CH2:24][CH2:23][CH2:22][C@@H:21]1[NH2:26].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>ClCCl>[NH2:26][C@H:21]1[CH2:22][CH2:23][CH2:24][CH2:25][C@@H:20]1[NH:27][CH:16]1[CH2:17][CH2:18][N:13]([C:2]2([CH3:1])[CH2:7][CH2:6][N:5]([C:8]([O:10][CH2:11][CH3:12])=[O:9])[CH2:4][CH2:3]2)[CH2:14][CH2:15]1

参加物

6

反応物 4

HCID 4793071,2-Diaminocyclohexane, (+)-HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 57619824Ethyl 4-methyl-4-(4-oxo-1-piperidyl)piperidine-1-carboxylate

生成物 1

HCID 44541147ethyl 4-[4-[[(1S,2S)-2-aminocyclohexyl]amino]-1-piperidyl]-4-methyl-piperidine-1-carboxylate収率 47.5%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a solution ethyl 4-methyl-4-(4-oxo-1-piperidyl)piperidine-1-carboxylate (336 mg, 1.25 mmol) and (1S,2S)-cyclohexane-1,2-diamine (286 mg, 0.5 mmol) in dichloromethane (10 mL) was added sodium triacetoxyborohydride (398 mg, 1.88 mmol) and stirred at room temperature for 12 h. Saturated NaHCO3 (5 mL) was added, the phases were separated and the aqueous phase was extracted with dichloromethane (2×10 mL). The combined organic phases were washed with brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by passing through a short silica gel pad (5-10% MeOH in dichloromethane) to afford the title compound (87 mg, 19%). MS (M+1): 367.31.

後処理

  1. customthe phases were separated
  2. extractionthe aqueous phase was extracted with dichloromethane (2×10 mL)
  3. washThe combined organic phases were washed with brine
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified

出典と根拠

ORDレコード
ord-1b97ca16fe42434790770a17b98194ed
出典データセット
uspto-grants-2012_02
特許番号
US08119661B2

反応ノート

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