Ethyl Acetate → HCID 178438649, compound

HRID 519811Notes

Reaction equation

HRID 519811 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]1([Mg]Br)[CH2:45][CH2:44]1.C(OCC)(=O)C>O1CCCC1>[CH:43]1([CH:36]([OH:37])[CH2:35][O:34][C@H:31]2[CH2:30][CH2:29][C@H:28]([N:18]3[C:17](=[O:42])[C:16]([CH2:15][C:12]4[CH:13]=[CH:14][C:9]([C:4]5[C:3]([C:1]#[N:2])=[CH:8][CH:7]=[CH:6][CH:5]=5)=[CH:10][CH:11]=4)=[C:21]([CH2:22][CH2:23][CH3:24])[N:20]4[N:25]=[CH:26][CH:27]=[C:19]34)[CH2:33][CH2:32]2)[CH2:45][CH2:44]1

Participants

5

Reactant 3

HCID 8857Ethyl AcetateHCID 178418630HCID 178418630, compoundHCID 178438670HCID 178438670, compound

Product 1

HCID 178438649HCID 178438649, compoundYield 81%

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 (6 mL) was added dropwise cyclopropylmagnesium bromide (0.5M tetrahydrofuran solution, 4 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 (0.45 g, 81%).

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-4e335d6b8f254585bd91614d45117c6b
Source dataset
uspto-grants-2015_08
Patent number
US09115136B2

Reaction notes

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