Potassium Carbonate → 4-(4-Chloro-2-fluorophenoxy)-6-methoxy-7-((4-pyridyl)methoxy)quinazoline

HRID 279573Notes

Reaction equation

[Cl:1][C:2]1[CH:21]=[CH:20][C:5]([O:6][C:7]2[C:16]3[C:11](=[CH:12][C:13]([OH:19])=[C:14]([O:17][CH3:18])[CH:15]=3)[N:10]=[CH:9][N:8]=2)=[C:4]([F:22])[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Cl.Cl[CH2:31][C:32]1[CH:37]=[CH:36][N:35]=[CH:34][CH:33]=1>CN(C=O)C>[Cl:1][C:2]1[CH:21]=[CH:20][C:5]([O:6][C:7]2[C:16]3[C:11](=[CH:12][C:13]([O:19][CH2:31][C:32]4[CH:37]=[CH:36][N:35]=[CH:34][CH:33]=4)=[C:14]([O:17][CH3:18])[CH:15]=3)[N:10]=[CH:9][N:8]=2)=[C:4]([F:22])[CH:3]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 4-(4-chloro-2-fluorophenoxy)-7-hydroxy-6-methoxyquinazoline (112 mg, 0.35 mmol), potassium carbonate (138 mg, 1 mmol) and 4-(chloromethyl)pyridine hydrochloride (59 mg, 0.36 mmol) in DMF (2 ml) was heated at 80° C. for 1 hour. The mixture was allowed to cool and partitioned between ethyl acetate and water. The organic layer was separated, washed with water and brine, dried (MgSO4) and the solvent removed by evaporation. The residue was purified by column chromatography eluting with methylene chloride/methanol (95/5) to give 4-(4-chloro-2-fluorophenoxy)-6-methoxy-7-((4-pyridyl)methoxy)quinazoline (115 mg, 80%).

Workup

temperatureto cool
custompartitioned between ethyl acetate and water
customThe organic layer was separated
washwashed with water and brine
dry with materialdried (MgSO4)
customthe solvent removed by evaporation
customThe residue was purified by column chromatography
washeluting with methylene chloride/methanol (95/5)

Sources & evidence

ORD record: ord-ae4223312f2242a19d709b1467cc6ef6
Source dataset: uspto-grants-2002_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06362336B1

Reaction notes

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