Potassium Carbonate → HCID 71621531, compound

HRID 2278848Notes

Reaction equation

HRID 2278848 reaction equation
Cl[C:2]1[N:7]=[N:6][C:5]([C:8]2[C:16]3[C:11](=[N:12][CH:13]=[CH:14][CH:15]=3)[N:10]([CH2:17][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=3[F:24])[N:9]=2)=[N:4][C:3]=1[NH2:25].Cl.[N:27]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][CH:28]=1.C(=O)([O-])[O-].[K+].[K+].C1(P(C2CCCCC2)C2CCCCC2)CCCCC1>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]>[F:24][C:19]1[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=1[CH2:17][N:10]1[C:11]2=[N:12][CH:13]=[CH:14][CH:15]=[C:16]2[C:8]([C:5]2[N:6]=[N:7][C:2]([C:30]3[CH:31]=[CH:32][N:27]=[CH:28][CH:29]=3)=[C:3]([NH2:25])[N:4]=2)=[N:9]1

Participants

7

Reactant 4

HCID 11430Potassium CarbonateHCID 75806TricyclohexylphosphineHCID 44118740Pyridin-4-ylboronic acid--hydrogen chloride (1/1)HCID 89690930HCID 89690930, compound

Product 1

HCID 71621531HCID 71621531, compoundYield 35.3%

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 312751,4-DioxaneSolvent

Procedure

Under an argon atmosphere, 140 mg (purity 65%, 0.256 mmol) of 6-chloro-3-[1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl]-1,2,4-triazine-5-amine were suspended in 5 ml of absolute dioxane. 122 mg (0.767 mmol) of pyridin-4-ylboronic acid hydrochloride, 1.023 ml (1.023 mmol) of 1N aqueous potassium carbonate solution and 14 mg (0.051 mmol) of tricyclohexylphosphine were added and argon was passed through the suspension for 10 min with stirring. Then, 28 mg (0.038 mmol) of 1,1′-bis(diphenylphosphino)ferrocenepalladium(II) chloride were added and the reaction mixture was stirred for 30 min in the microwave at 140° C. The reaction mixture was again stirred for 60 min in the microwave at 140° C. After cooling, the mixture was filtered over an Extrelut cartridge and after-washed with a mixture of dichloromethane/methanol (v/v=20:1). The filtrate was concentrated and the residue was purified by preparative HPLC (mobile phase: acetonitrile/water, gradient 20:80→100:0). 36 mg of the target compound were obtained (33% of theory).

Workup

  1. stirringthe reaction mixture was stirred for 30 min in the microwave at 140° C
  2. stirringThe reaction mixture was again stirred for 60 min in the microwave at 140° C
  3. temperatureAfter cooling
  4. filtrationthe mixture was filtered over an Extrelut cartridge
  5. washafter-washed with a mixture of dichloromethane/methanol (v/v=20:1)
  6. concentrationThe filtrate was concentrated
  7. customthe residue was purified by preparative HPLC (mobile phase: acetonitrile/water, gradient 20:80→100:0)

Sources & evidence

ORD record
ord-eb5e8a635e9a49dc8d789bc4faf9b40e
Source dataset
uspto-grants-2015_09
Patent number
US09133191B2

Reaction notes

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