Potassium Carbonate → HCID 67055868, compound

HRID 2036782Notes

Reaction equation

HRID 2036782 reaction equation
Cl[C:2]1[N:11]=[C:10]([NH:12][CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][N:15]=2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][C:8]=2[C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[N:3]=1.[CH3:26][O:27][C:28]1[N:33]=[CH:32][C:31](B2OC(C)(C)C(C)(C)O2)=[CH:30][CH:29]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.O.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[CH3:26][O:27][C:28]1[N:33]=[CH:32][C:31]([C:2]2[N:11]=[C:10]([NH:12][CH2:13][C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][N:15]=3)[C:9]3[C:4](=[CH:5][CH:6]=[CH:7][C:8]=3[C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[N:3]=2)=[CH:30][CH:29]=1

Participants

7

Reactant 3

HCID 11430Potassium CarbonateHCID 162177142-Methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridineHCID 866706132-chloro-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine

Product 1

HCID 67055868HCID 67055868, compoundYield 57.5%

Reagents, catalysts & solvents 3

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
90 °C

Procedure

To a solution of 2-chloro-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine (200 mg, 0.58 mmol) in DMF (10 mL) and H2O (2 mL) under nitrogen was added 6-methoxypyridin-3-ylboronic acid pinacol ester (202 mg, 0.86 mmol) and potassium carbonate (160 mg, 1.16 mmol). Upon completion of addition, the mixture was degassed with nitrogen for 15 min and then tetrakis(triphenylphosphine)-palladium (66 mg, 0.0050 mmol) was added. The mixture was again degassed with nitrogen for 10 min. After this time, the reaction mixture was heated to 90° C. where it stirred for 12 h. The reaction mixture was then allowed to cool to room temperature and then quenched by the addition of water. The reaction mixture was extracted with ethyl acetate and the organic layer was washed successively with water and brine. The combined organic layers were dried over Na2SO4, filtered and concentrated under reduced pressure. The resulting concentrate was purified by flash column chromatography using 16% ethyl acetate in petroleum ether to afford 2-(6-methoxypyridin-3-yl)-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine (140 mg) as a brown solid. 1H NMR (400 MHz, DMSO-d6) δ (ppm): 9.26 (d, J=2.4 Hz, 1H), 8.70-8.67 (dd, J=8.8, 2.4 Hz, 1H), 8.23-8.22 (d, J=5.2 Hz, 1H), 7.84-7.76 (m, 2H), 7.73-7.69 (dt, J=8.0, 2.0 Hz, 1H), 7.58-7.48 (m, 5H), 7.32-7.30 (d, J=7.6 Hz, 1H), 7.25-7.23 (m, 2H), 6.95-6.93 (d, J=8.8 Hz, 1H), 6.81-6.79 (t, J=4.0 Hz, 1H), 4.72-4.71 (d, J=4.0 Hz, 2H), 3.94 (s, 3H). LCMS Method S: retention time 3.96 min, [M+1]=420.2. HPLC Method B: purity 98.9%, retention time 8.93 min.

Workup

  1. additionUpon completion of addition
  2. customthe mixture was degassed with nitrogen for 15 min
  3. customThe mixture was again degassed with nitrogen for 10 min
  4. temperatureto cool to room temperature
  5. customquenched by the addition of water
  6. extractionThe reaction mixture was extracted with ethyl acetate
  7. washthe organic layer was washed successively with water and brine
  8. dry with materialThe combined organic layers were dried over Na2SO4
  9. filtrationfiltered
  10. concentrationconcentrated under reduced pressure
  11. concentrationThe resulting concentrate
  12. customwas purified by flash column chromatography

Sources & evidence

ORD record
ord-e9d8e6f96f764e9c9faa4ce8f3495fb7
Source dataset
uspto-grants-2013_11
Patent number
US08575184B2

Reaction notes

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