Potassium Carbonate → 4-(3-Acetoxy-4-methylanilino)-6-methoxy-7-(4-pyridylmethoxy)quinazoline

HRID 1420893Notes

Reaction equation

Cl.[C:2]([O:5][C:6]1[CH:7]=[C:8]([CH:23]=[CH:24][C:25]=1[CH3:26])[NH:9][C:10]1[C:19]2[C:14](=[CH:15][C:16]([OH:22])=[C:17]([O:20][CH3:21])[CH:18]=2)[N:13]=[CH:12][N:11]=1)(=[O:4])[CH3:3].C(=O)([O-])[O-].[K+].[K+].Br.Br[CH2:35][C:36]1[CH:41]=[CH:40][N:39]=[CH:38][CH:37]=1>CN(C=O)C>[C:2]([O:5][C:6]1[CH:7]=[C:8]([CH:23]=[CH:24][C:25]=1[CH3:26])[NH:9][C:10]1[C:19]2[C:14](=[CH:15][C:16]([O:22][CH2:35][C:36]3[CH:41]=[CH:40][N:39]=[CH:38][CH:37]=3)=[C:17]([O:20][CH3:21])[CH:18]=2)[N:13]=[CH:12][N:11]=1)(=[O:4])[CH3:3]

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of 4-(3-acetoxy-4-methylanilino)-7-hydroxy-6-methoxyquinazoline hydrochloride (375 mg, 1 mmol) in DMF (16 ml) were added at ambient temperature potassium carbonate (415 mg, 3 mmol) and 4-(bromomethyl)pyridine hydrobromide (J. Org. Chem. 1958, 23, 575, 278 mg, 1.1 mmol). The reaction mixture was heated at 60° C. for 2 hours. The mixture was evaporated and the residue was partitioned between ethyl acetate and water. The organic layer was washed with a saturated aqueous sodium chloride solution, dried (MgSO4) and evaporated. The residue was purified by column flash chromatography, eluting with methylene chloride/methanol (95/5) to give 4-(3-acetoxy4-methylanilino)-6-methoxy-7-(4-pyridylmethoxy)quinazoline (93 mg, 22%).

Workup

customThe mixture was evaporated
customthe residue was partitioned between ethyl acetate and water
washThe organic layer was washed with a saturated aqueous sodium chloride solution
dry with materialdried (MgSO4)
customevaporated
customThe residue was purified by column flash chromatography
washeluting with methylene chloride/methanol (95/5)

Sources & evidence

ORD record: ord-c71c67196d3f428e8b32d188f54db66b
Source dataset: uspto-grants-2000_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06071921

Reaction notes

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