Sodium triacetoxyborohydride → Tert-butyl 4-{2-[4-(1-methyl-6-oxo-1,6-dihydro-[4,4']bipyrimidinyl-2-yloxy)piperidin-1-yl]ethyl}piperidine-1-carboxylate

HRID 1468783

반응식

HRID 1468783 반응식
[CH3:1][N:2]1[C:7](=[O:8])[CH:6]=[C:5]([C:9]2[CH:14]=[CH:13][N:12]=[CH:11][N:10]=2)[N:4]=[C:3]1[O:15][CH:16]1[CH2:21][CH2:20][NH:19][CH2:18][CH2:17]1.O=[CH:23][CH2:24][CH:25]1[CH2:30][CH2:29][N:28]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:27][CH2:26]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(O)(=O)C.ClCCCl>[CH3:1][N:2]1[C:7](=[O:8])[CH:6]=[C:5]([C:9]2[CH:14]=[CH:13][N:12]=[CH:11][N:10]=2)[N:4]=[C:3]1[O:15][CH:16]1[CH2:21][CH2:20][N:19]([CH2:23][CH2:24][CH:25]2[CH2:26][CH2:27][N:28]([C:31]([O:33][C:34]([CH3:35])([CH3:37])[CH3:36])=[O:32])[CH2:29][CH2:30]2)[CH2:18][CH2:17]1

참가 물질

6

반응물 3

HCID 5049666Sodium triacetoxyborohydrideHCID 10353694tert-Butyl 4-(2-oxoethyl)piperidine-1-carboxylateHCID 679776501-methyl-2-(piperidin-4-yloxy)-1H-[4,4']bipyrimidinyl-6-one

생성물 1

HCID 68160052Tert-butyl 4-{2-[4-(1-methyl-6-oxo-1,6-dihydro-[4,4']bipyrimidinyl-2-yloxy)piperidin-1-yl]ethyl}piperidine-1-carboxylate수율 67%

시약·촉매·용매 2

HCID 176Acetic Acid촉매HCID 111,2-Dichloroethane용매

실험 절차

To a mixture of 1-methyl-2-(piperidin-4-yloxy)-1H-[4,4′]bipyrimidinyl-6-one (290 mg, 1.0 mmol), tert-butyl 4-(2-oxo-ethyl)piperidine-1-carboxylate (300 mg 1.3 mmol) and acetic acid (one drop) in 1,2-dichloroethane (5.0 ml) was added sodium triacetoxyborohydride (530 mg, 2.5 mmol). The mixture was stirred at room temperature overnight. The mixture was partitioned between water and dichloromethane. The organic layer was washed with brine, dried over sodium sulfate, and concentrated in vacuo. The residue was purified by NH-silica gel column chromatography (eluent; hexane/ethyl acetate=30/70) to afford tert-butyl 4-{2-[4-(1-methyl-6-oxo-1,6-dihydro-[4,4′]bipyrimidinyl-2-yloxy)piperidin-1-yl]ethyl}piperidine-1-carboxylate as a colorless solid (340 mg, 0.67 mmol, 67%).

후처리

  1. customThe mixture was partitioned between water and dichloromethane
  2. washThe organic layer was washed with brine
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by NH-silica gel column chromatography (eluent; hexane/ethyl acetate=30/70)

출처 및 근거

ORD 기록
ord-d8ab29b0c53b4e918a83262e1607bd49
출처 데이터셋
uspto-grants-2015_04
특허 번호
US09006232B2

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