Potassium Carbonate → HCID 51029807, compound

HRID 2036814Notes

Reaction equation

HRID 2036814 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.CC1(C)C(C)(C)OB([C:34]2[CH:35]=[C:36]([C:40]3[O:44][CH:43]=[N:42][CH:41]=3)[CH:37]=[N:38][CH:39]=2)O1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O>[O:44]1[C:40]([C:36]2[CH:35]=[C:34]([C:2]3[N:11]=[C:10]([NH:12][CH2:13][C:14]4[CH:19]=[CH:18][CH:17]=[CH:16][N:15]=4)[C:9]4[C:4](=[CH:5][CH:6]=[CH:7][C:8]=4[C:20]4[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=4)[N:3]=3)[CH:39]=[N:38][CH:37]=2)=[CH:41][N:42]=[CH:43]1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 670559711272356-99-6HCID 866706132-chloro-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine

Product 1

HCID 51029807HCID 51029807, compoundYield 10%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

To a solution of 2-chloro-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine (0.115 g, 0.330 mmol) in 1,4-dioxane (6 mL) and H2O (1.5 mL) under nitrogen was added, 5-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)oxazole (0.10 g, 0.36 mmol) and potassium carbonate (0.136 g, 0.990 mmol). The reaction mixture was degassed with nitrogen for 15 min. (1,1′-Bis(diphenylphosphino)-ferrocene)palladium (II) chloride dichloromethane complex (0.026 g, 0.033 mmol) was added and the reaction mixture was again degassed for 10 min with nitrogen. The reaction mixture was stirred at 100° C. for 16 h, then allowed to cool to room temperature and quenched with water. The reaction mixture was transferred to a separation funnel and the aqueous layer extracted with ethyl acetate. The combined organic portions were washed with water and saturated NaCl, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by silica gel column chromatography using 5% methanol in dichloromethane to provide 2-(5-(oxazol-5-yl)pyridin-3-yl)-5-phenyl-N-(pyridin-2-ylmethyl)quinazolin-4-amine (0.015 g) as a brown solid. 1H NMR (400 MHz, DMSO-d6) δ (ppm): 9.70 (s, 1H); 9.03 (s, 1H); 8.27 (d, 2H, J=3.6 Hz); 8.03 (s, 1H0; 7.77 (t, 1H, J=7.6 Hz); 7.70-7.58 (m, 2H); 7.54-7.47 (m, 5H0; 7.33-7.28 (m, 1H); 7.20-7.10 (m, 5H0; 6.82 (br, 1 h); 4.80 (d, 2H, J=4.4 Hz). LCMS Method Y: retention time 1.98 min; [M+1]=457.2; HPLC Method A1: purity 98.7%, retention time=7.09 min.

Workup

  1. customThe reaction mixture was degassed with nitrogen for 15 min. (1,1′-Bis(diphenylphosphino)-ferrocene)palladium (II) chloride dichloromethane complex (0.026 g, 0.033 mmol)
  2. additionwas added
  3. customthe reaction mixture was again degassed for 10 min with nitrogen
  4. temperatureto cool to room temperature
  5. customquenched with water
  6. customThe reaction mixture was transferred to a separation funnel
  7. extractionthe aqueous layer extracted with ethyl acetate
  8. washThe combined organic portions were washed with water and saturated NaCl
  9. dry with materialdried over Na2SO4
  10. filtrationfiltered
  11. concentrationconcentrated under reduced pressure
  12. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-e89818f3f6ae4704bbee7b473cb51d41
Source dataset
uspto-grants-2013_11
Patent number
US08575184B2

Reaction notes

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