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Dimethyl Sulfoxide → 6-propyl-3-[4-(2-fluoroethoxy)phenyl]-2-methyl-5-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}pyrimidin-4(3H)-one

HRID 1673828
Notes
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Reaction equation

HRID 1673828 reaction equation
[Cl-].O[NH3+:3].[C:4](=[O:7])([O-])[OH:5].[Na+].CS(C)=O.[F:13][CH2:14][CH2:15][O:16][C:17]1[CH:22]=[CH:21][C:20]([N:23]2[C:28](=[O:29])[C:27]([CH2:30][C:31]3[CH:36]=[CH:35][C:34]([C:37]4[C:38]([C:43]#[N:44])=[CH:39][CH:40]=[CH:41][CH:42]=4)=[CH:33][CH:32]=3)=[C:26]([CH2:45][CH2:46][CH3:47])[N:25]=[C:24]2[CH3:48])=[CH:19][CH:18]=1>C(OCC)(=O)C>[CH2:45]([C:26]1[N:25]=[C:24]([CH3:48])[N:23]([C:20]2[CH:21]=[CH:22][C:17]([O:16][CH2:15][CH2:14][F:13])=[CH:18][CH:19]=2)[C:28](=[O:29])[C:27]=1[CH2:30][C:31]1[CH:36]=[CH:35][C:34]([C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][C:38]=2[C:43]2[NH:3][C:4](=[O:7])[O:5][N:44]=2)=[CH:33][CH:32]=1)[CH2:46][CH3:47]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 679Dimethyl SulfoxideHCID 21645Hydroxylamine HClHCID 516892Sodium BicarbonateHCID 57460376HCID 57460376, compound

Product 1

HCID 1360269416-propyl-3-[4-(2-fluoroethoxy)phenyl]-2-methyl-5-{[2'-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)biphenyl-4-yl]methyl}pyrimidin-4(3H)-oneYield 89.1%

Reagents, catalysts & solvents

1
HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
50 °C

Procedure

A mixture of hydroxylammonium chloride (1.6 g), sodium hydrogen carbonate (2.3 g) and dimethyl sulfoxide (11 mL) was stirred at 50° C. for 30 min, 4′-({1-[4-(2-fluoroethoxy)phenyl]-2-methyl-6-oxo-4-propyl-1,6-dihydropyrimidin-5-yl}methyl)biphenyl-2-carbonitrile (1.1 g) was added, and the mixture was stirred at 90° C. for 16 hr. The reaction mixture was diluted with ethyl acetate, washed with water and then with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was dissolved in tetrahydrofuran (11 mL), N,N′-carbonyldiimidazole (0.56 g) and then 1,8-diazabicyclo[5.4.0]undec-7-ene (0.51 mL) were added, and the mixture was stirred at room temperature for 1 hr. The reaction mixture was diluted with ethyl acetate, washed with saturated aqueous potassium hydrogen sulfate 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 (1.1 g, 88%) as a colorless solid.

Workup

  1. stirringthe mixture was stirred at 90° C. for 16 hr
  2. washwashed with water
  3. dry with materialwith saturated brine, and dried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. dissolutionThe residue was dissolved in tetrahydrofuran (11 mL)
  6. additionN,N′-carbonyldiimidazole (0.56 g) and then 1,8-diazabicyclo[5.4.0]undec-7-ene (0.51 mL) were added
  7. stirringthe mixture was stirred at room temperature for 1 hr
  8. additionThe reaction mixture was diluted with ethyl acetate
  9. washwashed with saturated aqueous potassium hydrogen sulfate solution
  10. dry with materialwith saturated brine, and dried over anhydrous magnesium sulfate
  11. customThe solvent was evaporated under reduced pressure
  12. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-1c0ffb79b8b74edcbc90cb81c96fd850
Source dataset
uspto-grants-2011_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07998968B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes