Potassium Phosphate, Tribasic → tert-Butyl 4-{4-carbamoyl-3-[(2-fluoropyridin-4-yl)amino]-1H-pyrazol-1-yl}-4-(cyanomethyl)piperidine-1-carboxylate

HRID 521215Notes

Reaction equation

HRID 521215 reaction equation
[NH2:1][C:2]1[C:6]([C:7](=[O:9])[NH2:8])=[CH:5][N:4]([C:10]2([CH2:23][C:24]#[N:25])[CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:12][CH2:11]2)[N:3]=1.Br[C:27]1[CH:32]=[CH:31][N:30]=[C:29]([F:33])[CH:28]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+].CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C>CCOC(C)=O.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O1CCOCC1>[C:7]([C:6]1[C:2]([NH:1][C:27]2[CH:32]=[CH:31][N:30]=[C:29]([F:33])[CH:28]=2)=[N:3][N:4]([C:10]2([CH2:23][C:24]#[N:25])[CH2:15][CH2:14][N:13]([C:16]([O:18][C:19]([CH3:20])([CH3:21])[CH3:22])=[O:17])[CH2:12][CH2:11]2)[CH:5]=1)(=[O:9])[NH2:8]

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 27628514-Bromo-2-fluoropyridineHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 86729368tert-Butyl 4-(3-amino-4-carbamoyl-1H-pyrazol-1-yl)-4-(cyanomethyl)piperidine-1-carboxylate2×

Product 1

HCID 71536249tert-Butyl 4-{4-carbamoyl-3-[(2-fluoropyridin-4-yl)amino]-1H-pyrazol-1-yl}-4-(cyanomethyl)piperidine-1-carboxylate

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
95 °C

Procedure

To a microwave vial was added tert-butyl 4-(3-amino-4-carbamoyl-1H-pyrazol-1-yl)-4-(cyanomethyl)piperidine-1-carboxylate (Intermediate 35-1) (5.0 g, 14 mmol), 4-bromo-2-fluoropyridine (2.5 g, 14 mmol), K3PO4 (6.1 g, 29 mmol), and dioxane (72 mL). The mixture was degassed with bubbling argon for 5 minutes. Pd2(dba)3 (0.7 g, 0.7 mmol) and X-Phos (1.0 g, 2.2 mmol) were then added, and the vial was sealed and heated to 95° C. for 5 hours. The mixture was then cooled to ambient temperature, diluted with EtOAc, filtered through celite, and eluted with EtOAc. The filtrate was concentrated in vacuo, and the resulting yellow oil was purified by MPLC on silica gel (using a gradient elution of 50-100% EtOAc/hexanes) to afford the title compound, Example #9-1.

Workup

  1. customThe mixture was degassed with bubbling argon for 5 minutes
  2. customthe vial was sealed
  3. temperatureThe mixture was then cooled to ambient temperature
  4. filtrationfiltered through celite
  5. washeluted with EtOAc
  6. concentrationThe filtrate was concentrated in vacuo
  7. customthe resulting yellow oil was purified by MPLC on silica gel (
  8. washa gradient elution of 50-100% EtOAc/hexanes)

Sources & evidence

ORD record
ord-93d2efe1636746b78344f76323a87168
Source dataset
uspto-grants-2016_05
Patent number
US09328099B2

Reaction notes

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