Dimethylformamide → tert-butyl {6-[(2'-cyanobiphenyl-4-yl)methyl]-5-oxo-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-4(5H)-yl}acetate

HRID 2048179Notes

Reaction equation

HRID 2048179 reaction equation
[O:1]=[C:2]1[C:7]([CH2:8][C:9]2[CH:14]=[CH:13][C:12]([C:15]3[C:16]([C:21]#[N:22])=[CH:17][CH:18]=[CH:19][CH:20]=3)=[CH:11][CH:10]=2)=[C:6]([CH2:23][CH2:24][CH3:25])[N:5]2[N:26]=[CH:27][N:28]=[C:4]2[NH:3]1.Br[CH2:30][C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32].C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>C(OCC)(=O)C>[C:21]([C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][C:15]=1[C:12]1[CH:11]=[CH:10][C:9]([CH2:8][C:7]2[C:2](=[O:1])[N:3]([CH2:30][C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[C:4]3[N:5]([N:26]=[CH:27][N:28]=3)[C:6]=2[CH2:23][CH2:24][CH3:25])=[CH:14][CH:13]=1)#[N:22]

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 79177tert-Butyl bromoacetateHCID 1357150294'-[(5-Oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)methyl]biphenyl-2-carbonitrile

Product 1

HCID 86644024tert-butyl {6-[(2'-cyanobiphenyl-4-yl)methyl]-5-oxo-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-4(5H)-yl}acetateYield 25%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 4′-[(5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)methyl]biphenyl-2-carbonitrile (9 g), tert-butyl bromoacetate (3.8 mL), potassium carbonate (6 g) and N,N-dimethylformamide (100 mL) was stirred at room temperature for 3 hr. The reaction mixture was diluted with ethyl acetate, washed with 5% aqueous potassium hydrogensulfate solution and then with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a colorless solid (2.6 g, 25%).

Workup

  1. washwashed with 5% aqueous potassium hydrogensulfate solution
  2. dry with materialwith saturated brine, and dried over anhydrous magnesium sulfate
  3. customThe solvent was evaporated under reduced pressure
  4. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-2d80228d35014438bfa7d93a11e4f564
Source dataset
uspto-grants-2013_11
Patent number
US08592431B2

Reaction notes

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