Potassium Carbonate → 5-{[(3S)-1-(2,2-dimethylpropanoyl)-3-pyrrolidinyl]methyl}-4-[4-(7-quinolinyl)phenyl]-2,4-dihydro-3H-1,2,4-triazol-3-one

HRID 525245Notes

Reaction equation

HRID 525245 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](=[O:24])[C:20]([CH3:23])([CH3:22])[CH3:21])[CH2:15]3)=[N:11][NH:10][C:9]2=[O:25])=[CH:4][CH:3]=1.CC1(C)C(C)(C)OB([C:34]2[CH:43]=[C:42]3[C:37]([CH:38]=[CH:39][CH:40]=[N:41]3)=[CH:36][CH:35]=2)O1.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>[CH3:21][C:20]([CH3:23])([CH3:22])[C:19]([N:16]1[CH2:17][CH2:18][C@@H:14]([CH2:13][C:12]2[N:8]([C:5]3[CH:6]=[CH:7][C:2]([C:34]4[CH:43]=[C:42]5[C:37]([CH:38]=[CH:39][CH:40]=[N:41]5)=[CH:36][CH:35]=4)=[CH:3][CH:4]=3)[C:9](=[O:25])[NH:10][N:11]=2)[CH2:15]1)=[O:24]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 592961167-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)QuinolineHCID 67355705HCID 67355705, compound

Product 1

HCID 682614855-{[(3S)-1-(2,2-dimethylpropanoyl)-3-pyrrolidinyl]methyl}-4-[4-(7-quinolinyl)phenyl]-2,4-dihydro-3H-1,2,4-triazol-3-oneYield 38.8%

Reagents, catalysts & solvents 2

HCID 178418807HCID 178418807, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

A solution of 4-(4-bromophenyl)-5-{[(3S)-1-(2,2-dimethylpropanoyl)-3-pyrrolidinyl]methyl}-2,4-dihydro-3H-1,2,4-triazol-3-one (0.277 mmol) in dioxane (2 mL) was treated with 7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline (0.294 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II)-dichloromethane adduct (20 mg), and 2M aq potassium carbonate (1 mL). The reaction mixture was purged with nitrogen, sealed, and stirred at 110° C. for 1 h. The reaction mixture was cooled to room temperature, diluted with water, neutralized with the dropwise addition of 6N aq HCl, and extracted with ethyl acetate. The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by reverse phase HPLC (10-70% acetonitrile/water+0.1% NH4OH) and then reverse phase HPLC (10-40% acetonitrile w/0.1% TFA/water w/0.1% TFA). The combined product fractions were concentrated in vacuo for 30 min to remove the acetonitrile. The aqueous solution was neutralized with the addition of saturated aqueous sodium bicarbonate and extracted with dichloromethane (2×). The combined organic layers were dried over sodium sulfate, filtered, and concentrated in vacuo to afford the title compound (49 mg, 38% yield). MS(ES)+ m/e 456.0 [M+H]+.

Workup

  1. customThe reaction mixture was purged with nitrogen
  2. customsealed
  3. temperatureThe reaction mixture was cooled to room temperature
  4. additiondiluted with water
  5. additionneutralized with the dropwise addition of 6N aq HCl
  6. extractionextracted with ethyl acetate
  7. dry with materialThe organic layer was dried over sodium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo
  10. customThe residue was purified by reverse phase HPLC (10-70% acetonitrile/water+0.1% NH4OH)
  11. concentrationThe combined product fractions were concentrated in vacuo for 30 min
  12. customto remove the acetonitrile
  13. additionThe aqueous solution was neutralized with the addition of saturated aqueous sodium bicarbonate
  14. extractionextracted with dichloromethane (2×)
  15. dry with materialThe combined organic layers were dried over sodium sulfate
  16. filtrationfiltered
  17. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-dad73dcd702c4f6089684c5fda9fc075
Source dataset
uspto-grants-2016_05
Patent number
US09340529B2

Reaction notes

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