Potassium Carbonate → 5-{[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]methyl}-4-(3,4'-difluoro-4-biphenylyl)-2,4-dihydro-3H-1,2,4-triazol-3-one

HRID 2405388Notes

Reaction equation

HRID 2405388 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]([CH2:13][C@@H:14]3[CH2:18][CH2:17][N:16]([C:19]([CH:21]4[CH2:23][CH2:22]4)=[O:20])[CH2:15]3)=[N:11][NH:10][C:9]2=[O:24])=[C:4]([F:25])[CH:3]=1.[F:26][C:27]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][CH:28]=1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].ClCCl>[CH:21]1([C:19]([N:16]2[CH2:17][CH2:18][C@@H:14]([CH2:13][C:12]3[N:8]([C:5]4[CH:6]=[CH:7][C:2]([C:30]5[CH:31]=[CH:32][C:27]([F:26])=[CH:28][CH:29]=5)=[CH:3][C:4]=4[F:25])[C:9](=[O:24])[NH:10][N:11]=3)[CH2:15]2)=[O:20])[CH2:23][CH2:22]1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 2856454-Fluorophenylboronic acidHCID 673758864-(4-bromo-2-fluorophenyl)-5-{[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]methyl}-2,4-dihydro-3H-1,2,4-triazol-3-one

Product 1

HCID 673773675-{[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]methyl}-4-(3,4'-difluoro-4-biphenylyl)-2,4-dihydro-3H-1,2,4-triazol-3-oneYield 61%

Reagents, catalysts & solvents 2

HCID 178418807HCID 178418807, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

A solution of 4-(4-bromo-2-fluorophenyl)-5-{[(3S)-1-(cyclopropylcarbonyl)-3-pyrrolidinyl]methyl}-2,4-dihydro-3H-1,2,4-triazol-3-one (0.244 mmol) in dioxane (1.5 mL) was treated with (4-fluorophenyl)boronic acid (0.269 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II)-dichloromethane adduct (10 mg), and 2M aq potassium carbonate (0.733 mmol). The reaction mixture was purged with nitrogen, sealed, and irradiated in a microwave (Biotage Initiator) at 150° C. for 10 min. The reaction mixture was cooled to room temperature and was diluted with water (50 mL). The aqueous layer was acidified to pH˜4 using 1N aq HCl and was extracted with dichloromethane. The organic layer was dried over magnesium sulfate, treated with Si-Thiol (Silicycle, 20 mg), filtered, and concentrated in vacuo. The crude residue was purified by reverse phase HPLC (20-50% acetonitrile/water+0.1% NH4OH) to afford the title compound as an off-white solid (61%). MS(ES)+ m/e 425.0 [M+H]+.

Workup

  1. customThe reaction mixture was purged with nitrogen
  2. customsealed
  3. customirradiated in a microwave (Biotage Initiator) at 150° C. for 10 min
  4. additionwas diluted with water (50 mL)
  5. extractionwas extracted with dichloromethane
  6. dry with materialThe organic layer was dried over magnesium sulfate
  7. additiontreated with Si-Thiol (Silicycle, 20 mg)
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo
  10. customThe crude residue was purified by reverse phase HPLC (20-50% acetonitrile/water+0.1% NH4OH)

Sources & evidence

ORD record
ord-e2050807958343b2a7ee8898461fbf1b
Source dataset
uspto-grants-2014_08
Patent number
US08802864B2

Reaction notes

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