Ethanol → HCID 178438652, compound

HRID 2048549Notes

Reaction equation

HRID 2048549 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:41])[N:18]([C@H:28]3[CH2:33][CH2:32][C@H:31]([O:34][CH2:35][C:36](OCC)=[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].C(O)C.[BH4-].[Li+].[Cl-].[NH4+]>O1CCCC1.C(OCC)(=O)C>[OH:37][CH2:36][CH2:35][O:34][C@H:31]1[CH2:32][CH2:33][C@H:28]([N:18]2[C:17](=[O:41])[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

7

Reactant 4

HCID 702EthanolHCID 25517Ammonium ChlorideHCID 4148881Lithium borohydrideHCID 178438676HCID 178438676, compound

Product 1

HCID 178438652HCID 178438652, compoundYield 60%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of ethyl [(trans-4-{6-[(2′-cyanobiphenyl-4-yl)methyl]-5-oxo-7-propylpyrazolo[1,5-a]pyrimidin-4(5H)-yl}cyclohexyl)oxy]acetate (1.16 g) in tetrahydrofuran (8 mL)-ethanol (2 mL) was added lithium borohydride (0.46 g), and the mixture was stirred for 18 hr. To the reaction mixture were added ethyl acetate and saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and then 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 (0.64 g, 60%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water
  3. dry with materialwith saturated brine, dried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-51b805d99fc545edab35cfa5eb0638e3
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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