Hydrochloric Acid → 4-(4-Chloro-2-fluoroanilino)-6-methoxy-7-(1-methylpiperidin-4-ylmethoxy)quinazoline hydrochloride

HRID 238102Notes

Reaction equation

Cl.C(O)C.[Cl:5][C:6]1[C:15]2[C:10](=[CH:11][C:12]([O:18][CH2:19][CH:20]3[CH2:25][CH2:24][N:23]([CH3:26])[CH2:22][CH2:21]3)=[C:13]([O:16][CH3:17])[CH:14]=2)[N:9]=[CH:8][N:7]=1.[Cl:27][C:28]1[CH:34]=[CH:33][C:31]([NH2:32])=[C:30]([F:35])[CH:29]=1>C(O)(C)C.CCOCC>[ClH:5].[Cl:27][C:28]1[CH:34]=[CH:33][C:31]([NH:32][C:6]2[C:15]3[C:10](=[CH:11][C:12]([O:18][CH2:19][CH:20]4[CH2:25][CH2:24][N:23]([CH3:26])[CH2:22][CH2:21]4)=[C:13]([O:16][CH3:17])[CH:14]=3)[N:9]=[CH:8][N:7]=2)=[C:30]([F:35])[CH:29]=1

Participants

Conditions

Temperature: 50 °C

Procedure

3.5M Hydrogen chloride in ethanol (75 μl, 0.26 mmol) was added to a suspension of 4-chloro-6-methoxy-7-(1-methylpiperidin-4-ylmethoxy)quinazoline (80 mg, 0.25 mmol), (prepared as described for the starting material in Example 2c), in isopropanol (3 ml), the mixture was heated to 50° C. and 4-chloro-2-fluoroaniline (44 mg, 0.3 mmol) was added. The mixture was heated at reflux for 30 minutes. After cooling, the mixture was diluted with ether (3 ml). The precipitate was collected by filtration, washed with ether and dried under vacuum to give 4-(4-chloro-2-fluoroanilino)-6-methoxy-7-(1-methylpiperidin-4-ylmethoxy)quinazoline hydrochloride (105 mg, 82%).

Workup

custom(prepared
temperatureThe mixture was heated
temperatureat reflux for 30 minutes
temperatureAfter cooling
filtrationThe precipitate was collected by filtration
washwashed with ether
customdried under vacuum

Sources & evidence

ORD record: ord-d370166b5619435f9afce9ad5251a956
Source dataset: uspto-grants-2014_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08642608B2

Reaction notes

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