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Cesium carbonate → (R)-1-(4-methyl-3-oxo-1-trityl-2,3-dihydro-1H-pyrazolo[4,3-c]pyridin-6-yl)-3-(1-phenylethyl)urea

HRID 588188
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HRID 588188 반응식
Cl[C:2]1[N:7]=[C:6]([CH3:8])[C:5]2[C:9](=[O:31])[NH:10][N:11]([C:12]([C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=3)[C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[C:4]=2[CH:3]=1.[C:32]1([C@H:38]([NH:40][C:41]([NH2:43])=[O:42])[CH3:39])[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1.C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH3:8][C:6]1[C:5]2[C:9](=[O:31])[NH:10][N:11]([C:12]([C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=3)([C:13]3[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=3)[C:25]3[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=3)[C:4]=2[CH:3]=[C:2]([NH:43][C:41]([NH:40][C@@H:38]([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH3:39])=[O:42])[N:7]=1
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참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 13013340(R)-1-(1-phenylethyl)ureaHCID 1182721366-chloro-4-methyl-1-trityl-1H-pyrazolo[4,3-c]pyridin-3(2H)-one2회

생성물 1

HCID 118272012(R)-1-(4-methyl-3-oxo-1-trityl-2,3-dihydro-1H-pyrazolo[4,3-c]pyridin-6-yl)-3-(1-phenylethyl)urea

시약·촉매·용매 2

HCID 167845palladium(II) acetate촉매HCID 312751,4-Dioxane용매

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온도
80 °C

실험 절차

6-Chloro-4-methyl-1-trityl-1H-pyrazolo[4,3-c]pyridin-3 (2H)-one (Intermediate 4B; 300 mg, 0.704 mmol), (R)-1-(1-phenylethyl)urea (139 mg, 0.845 mmol), palladium(II) acetate (31.6 mg, 0.141 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (122 mg, 0.211 mmol), and cesium carbonate (574 mg, 1.761 mmol) were taken up in dioxane (10.0 mL) in a 25 mL microwave vial. The vial was evacuated and back-filled with N2 (×3) then the reaction mixture was heated to 80° C. for 24 h. The reaction mixture was diluted with DCM, filtered through celite, and the filtrate was washed with water then brine. The organic layer was dried over sodium sulfate, filtered, concentrated in vacuo, and purified by flash chromatography (20-80% EtOAc/Hexanes) to give (R)-1-(4-methyl-3-oxo-1-trityl-2,3-dihydro-1H-pyrazolo[4,3-c]pyridin-6-yl)-3-(1-phenylethyl)urea. MS ESI calc'd. For C35H31N5O2 [M+1]+ 554. found 554.

후처리

  1. customThe vial was evacuated
  2. additionback-filled with N2 (×3)
  3. additionThe reaction mixture was diluted with DCM
  4. filtrationfiltered through celite
  5. washthe filtrate was washed with water
  6. dry with materialThe organic layer was dried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. custompurified by flash chromatography (20-80% EtOAc/Hexanes)

출처 및 근거

ORD 기록
ord-addc161ea0394e22b3b2f793125db281
출처 데이터셋
uspto-grants-2016_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09226922B2

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