4-(Tetramethyl-1,3,2-dioxaborolan-2-yl)aniline → 4-(4-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-1-ethyl-1H-pyrazolo[3,4-d]pyrimidin-6-yl)aniline

HRID 1093211Notes

Reaction equation

HRID 1093211 reaction equation
Cl[C:2]1[N:7]=[C:6]2[N:8]([CH2:11][CH3:12])[N:9]=[CH:10][C:5]2=[C:4]([N:13]2[CH2:19][CH:18]3[O:20][CH:15]([CH2:16][CH2:17]3)[CH2:14]2)[N:3]=1.[NH2:21][C:22]1[CH:27]=[CH:26][C:25](B2OC(C)(C)C(C)(C)O2)=[CH:24][CH:23]=1>C1(C)C=CC=CC=1.C(O)C.C(=O)([O-])[O-].[Na+].[Na+].C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:15]12[O:20][CH:18]([CH2:17][CH2:16]1)[CH2:19][N:13]([C:4]1[N:3]=[C:2]([C:25]3[CH:26]=[CH:27][C:22]([NH2:21])=[CH:23][CH:24]=3)[N:7]=[C:6]3[N:8]([CH2:11][CH3:12])[N:9]=[CH:10][C:5]=13)[CH2:14]2

Participants

6

Reactant 2

HCID 27346204-(Tetramethyl-1,3,2-dioxaborolan-2-yl)anilineHCID 866293763-(6-chloro-1-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-8-oxa-3-azabicyclo[3.2.1]octane

Product 1

HCID 665889664-(4-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-1-ethyl-1H-pyrazolo[3,4-d]pyrimidin-6-yl)aniline

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 10340Sodium CarbonateSolventHCID 21863594Toluene ethanolSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of 3-(6-chloro-1-ethyl-1H-pyrazolo[3,4-d]pyrimidin-4-yl)-8-oxa-3-azabicyclo[3.2.1]octane (0.55 g, 1.9 mmol), 4-aminophenylboronic acid pinacol ester (0.62 g, 2.8 mmol), and tetrakis(triphenylphosphine)palladium(0) (0.22 g, 10 mol %) in toluene/ethanol (1:1, 12 mL) and 2 M aqueous sodium carbonate solution (2 mL) was heated in a 10-20 mL Smith process vial in the microwave reactor for one hour at 120° C. The cooled mixture was partitioned between ethyl acetate and water. The aqueous phase was extracted three times with ethyl acetate. The combined extracts were washed with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, filtered, and concentrated to dryness under reduced pressure. The crude residue was purified via automated flash chromatography (methanol/chloroform) to provide 4-(4-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)-1-ethyl-1H-pyrazolo[3,4-d]pyrimidin-6-yl)aniline. MS (ES+): 351.0 (M+H)+

Workup

  1. customThe cooled mixture was partitioned between ethyl acetate and water
  2. extractionThe aqueous phase was extracted three times with ethyl acetate
  3. washThe combined extracts were washed with saturated aqueous sodium chloride solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated to dryness under reduced pressure
  7. customThe crude residue was purified

Sources & evidence

ORD record
ord-0df1adc7aafc4b3fb83cc7d96650def0
Source dataset
uspto-grants-2012_03
Patent number
US08129371B2

Reaction notes

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