Acetic Acid → 3-[7-Ethoxy-3-(3-fluoro-phenylamino)-2,4-dihydro-indeno[1,2-c]pyrazol-6-yloxy]-propan-1-ol

HRID 460359

Reaction equation

HRID 460359 reaction equation
[CH2:1]([O:3][C:4]1[CH:12]=[C:11]2[C:7]([CH2:8][CH2:9][C:10]2=O)=[CH:6][C:5]=1[O:14][CH2:15][CH2:16][CH2:17][O:18]C1CCCCO1)[CH3:2].[F:25][C:26]1[CH:27]=[C:28]([N:32]=[C:33]=S)[CH:29]=[CH:30][CH:31]=1.C[Si](C)(C)[Si](C)(C)C.[Li].[NH2:44][NH2:45].C(O)(=O)C>C(OCC)(=O)C.C1COCC1>[CH2:1]([O:3][C:4]1[CH:12]=[C:11]2[C:7]([CH2:8][C:9]3[C:10]2=[N:44][NH:45][C:33]=3[NH:32][C:28]2[CH:29]=[CH:30][CH:31]=[C:26]([F:25])[CH:27]=2)=[CH:6][C:5]=1[O:14][CH2:15][CH2:16][CH2:17][OH:18])[CH3:2]

Participants

8

Reactant 5

HCID 176Acetic AcidHCID 9321HydrazineHCID 98343-Fluorophenyl isothiocyanate2×HCID 184458066-Ethoxy-5-[3-(tetrahydro-pyran-2-yloxy)-propoxy]-indan-1-oneHCID 57425481Lithium hexamethyldisilane

Product 1

HCID 1784658023-[7-Ethoxy-3-(3-fluoro-phenylamino)-2,4-dihydro-indeno[1,2-c]pyrazol-6-yloxy]-propan-1-ol

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a mixture of 6-Ethoxy-5-[3-(tetrahydro-pyran-2-yloxy)-propoxy]-indan-1-one (Intermediate AA) (0.100 g, 0.0003 mol), 3-fluorophenyl isothiocyanate (Compound 4a) (0.043 mL, 0.00036 mol) and THF (3 mL) was added lithium hexamethyldisilane (0.360 mL, 0.00036 mol) dropwise at room temperature with stirring. The reaction mixture was stirred for 48 h. Hydrazine (0.011 mL, 0.00036 mol) and acetic acid (0.021 mL, 0.00036 mol) was added to the reaction mixture, which was then heated at reflux temperature for 12 h. The reaction solution was then diluted with ethyl acetate, washed with water and dried over MgSO4. The solvent was removed in vacuo and the crude material was purified on the reverse phase HPLC and converted to the desired product upon standing in the 0.1% TFA solution. Lyophilization yielded the title compound as a white powder. MS m/z 384.2 (M+H)+;

Workup

  1. stirringThe reaction mixture was stirred for 48 h
  2. temperaturewas then heated
  3. temperatureat reflux temperature for 12 h
  4. washwashed with water
  5. dry with materialdried over MgSO4
  6. customThe solvent was removed in vacuo
  7. customthe crude material was purified on the reverse phase HPLC

Sources & evidence

ORD record
ord-fc8a575e0cc74445b882d49375af1e7d
Source dataset
uspto-grants-2007_03
Patent number
US07196110B2

Linked notes

Loading…