Ethyl Acetate → HCID 178438662, compound

HRID 1688778Notes

Reaction equation

HRID 1688778 reaction equation
[C:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[CH:14]=[CH:13][C:12]([CH2:15][C:16]2[C:17](=[O:42])[N:18]([C@H:28]3[CH2:33][CH2:32][C@H:31]([O:34][CH2:35][C:36](N(OC)C)=[O:37])[CH2:30][CH2:29]3)[C:19]3[N:20]([N:25]=[CH:26][CH:27]=3)[C:21]=2[CH2:22][CH2:23][CH3:24])=[CH:11][CH:10]=1)#[N:2].[CH:43]([Mg]Br)([CH3:45])[CH3:44].C(OCC)(=O)C>O1CCCC1>[OH:37][CH:36]([CH:43]([CH3:45])[CH3:44])[CH2:35][O:34][C@H:31]1[CH2:32][CH2:33][C@H:28]([N:18]2[C:17](=[O:42])[C:16]([CH2:15][C:12]3[CH:13]=[CH:14][C:9]([C:4]4[C:3]([C:1]#[N:2])=[CH:8][CH:7]=[CH:6][CH:5]=4)=[CH:10][CH:11]=3)=[C:21]([CH2:22][CH2:23][CH3:24])[N:20]3[N:25]=[CH:26][CH:27]=[C:19]23)[CH2:29][CH2:30]1

Participants

5

Reactant 3

HCID 8857Ethyl AcetateHCID 178418365HCID 178418365, compoundHCID 178438670HCID 178438670, compound

Product 1

HCID 178438662HCID 178438662, compoundYield 56%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-[(trans-4-{6-[(2′-cyanobiphenyl-4-yl)methyl]-5-oxo-7-propylpyrazolo[1,5-a]pyrimidin-4(5H)-yl}cyclohexyl)oxy]-N-methoxy-N-methylacetamide (0.57 g) in tetrahydrofuran (5 mL) was added dropwise isopropylmagnesium bromide (1 M tetrahydrofuran solution, 2 mL) at 0° C., and the mixture was stirred for 1.5 hr. To the reaction mixture were added ethyl acetate and then saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated. The residue was dissolved in ethanol (10 mL), sodium borohydride (0.04 g) was added, and the mixture was stirred for 18 hr. To the reaction mixture were added ethyl acetate and then saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated. The residue was purified by silica gel column chromatography to give the title compound as a pale-yellow amorphous solid (0.31 g, 56%).

Workup

  1. extractionsaturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. dissolutionThe residue was dissolved in ethanol (10 mL)
  6. additionsodium borohydride (0.04 g) was added
  7. stirringthe mixture was stirred for 18 hr
  8. additionTo the reaction mixture were added ethyl acetate
  9. extractionsaturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate
  10. washThe organic layer was washed with saturated brine
  11. dry with materialdried over anhydrous magnesium sulfate
  12. concentrationconcentrated
  13. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-cc6356fca6054df3a917a325969f8297
Source dataset
uspto-grants-2012_04
Patent number
US08148383B2

Reaction notes

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