Boron trifluoride etherate → 3'-Fluoro-4'-[(4-{4-[1-(1-formylcyclobutyl)ethoxy]cyclohexyl}-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)methyl]biphenyl-2-carbonitrile

HRID 519744Notes

Reaction equation

HRID 519744 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([C:37]2[C:38]([C:43]#[N:44])=[CH:39][CH:40]=[CH:41][CH:42]=2)[CH:5]=[CH:6][C:7]=1[CH2:8][C:9]1[C:10](=[O:36])[N:11]([CH:21]2[CH2:35][CH2:34][C:24]3([O:32][CH2:31][C:27]4([CH2:30][CH2:29][CH2:28]4)[CH:26]([CH3:33])[O:25]3)[CH2:23][CH2:22]2)[C:12]2[N:13]([N:18]=[CH:19][N:20]=2)[C:14]=1[CH2:15][CH2:16][CH3:17].C([BH3-])#N.[Na+].B(F)(F)F.CCOCC.C(=O)([O-])O.[Na+].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O.S([O-])([O-])(=O)=S.[Na+].[Na+]>C(#N)C.O1CCCC1>[F:1][C:2]1[CH:3]=[C:4]([C:37]2[C:38]([C:43]#[N:44])=[CH:39][CH:40]=[CH:41][CH:42]=2)[CH:5]=[CH:6][C:7]=1[CH2:8][C:9]1[C:10](=[O:36])[N:11]([CH:21]2[CH2:35][CH2:34][CH:24]([O:25][CH:26]([C:27]3([CH:31]=[O:32])[CH2:28][CH2:29][CH2:30]3)[CH3:33])[CH2:23][CH2:22]2)[C:12]2[N:13]([N:18]=[CH:19][N:20]=2)[C:14]=1[CH2:15][CH2:16][CH3:17]

Participants

9

Reactant 6

HCID 8000Boron trifluoride etherateHCID 24477Sodium ThiosulfateHCID 159087TriacetoxyperiodinaneHCID 516892Sodium Bicarbonate2×HCID 5003444Sodium cyanoborohydrideHCID 670096483'-Fluoro-4'-{[4-(5-methyl-6,13-dioxadispiro[3.2.5.2]tetradec-10-yl)-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile

Product 1

HCID 866440513'-Fluoro-4'-[(4-{4-[1-(1-formylcyclobutyl)ethoxy]cyclohexyl}-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl)methyl]biphenyl-2-carbonitrileYield 32.8%

Reagents, catalysts & solvents 2

HCID 6342AcetonitrileSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
70 °C

Procedure

A mixture of 3′-fluoro-4′-{[4-(5-methyl-6,13-dioxadispiro[3.2.5.2]tetradec-10-yl)-5-oxo-7-propyl-4,5-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-6-yl]methyl}biphenyl-2-carbonitrile (0.64 g), sodium cyanoborohydride (0.33 g), boron trifluoride etherate (0.67 mL) and tetrahydrofuran (6 mL) was stirred at 70° C. for 20 hr. Saturated aqueous sodium hydrogen carbonate solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The residue obtained by purification by silica gel column chromatography was mixed with Dess-Martin periodinane (0.49 g) and acetonitrile (5 mL), and the mixture was stirred at room temperature for 4 hr. Saturated aqueous sodium hydrogen carbonate solution and aqueous sodium thiosulfate solution were added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed 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 (0.21 g, 32%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was evaporated under reduced pressure
  5. customThe residue obtained by purification by silica gel column chromatography
  6. stirringthe mixture was stirred at room temperature for 4 hr
  7. extractionthe mixture was extracted with ethyl acetate
  8. washThe organic layer was washed with saturated brine
  9. dry with materialdried over anhydrous magnesium sulfate
  10. customThe solvent was evaporated under reduced pressure
  11. customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-4be43c3798344c80bf5b78af50223fc1
Source dataset
uspto-grants-2015_08
Patent number
US09115136B2

Reaction notes

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