1,2-Dibromoethane → 7-(2-Bromoethoxy)-4-(4-chloro-2-fluoroanilino)6-methoxyquinazoline

HRID 279585Notes

Reaction equation

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

Participants

Conditions

Temperature: 35 °C

Procedure

1,2-Dibromoethane (725 mg, 4 mmol) was added by portions of 70 μl every 30 minutes to a mixture of 4-(4-chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline (320 mg, 1 mmol), (prepared as described for the starting material in Example 24), and potassium carbonate (552 mg, 4 mmol) in DMF (5 ml) heated at 35° C. The mixture was stirred for a further 30 minutes after the completion of the addition and then 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 triturated with petroleum ether/ether, the solid was collected by filtration and dried under vacuum to give 7-(2-bromoethoxy)-4-(4-chloro-2-fluoroanilino)-6-methoxyquinazoline (200 mg, 47%).

Workup

custom(prepared
additionafter the completion of the addition
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 triturated with petroleum ether/ether
filtrationthe solid was collected by filtration
customdried under vacuum

Sources & evidence

ORD record: ord-2cb64e1664a441859b3b5ab48025fe0c
Source dataset: uspto-grants-2002_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06362336B1

Reaction notes

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