Hydrochloric Acid → 4-(4-((4-Fluoroanilino)carbonyl)aminophenoxy)-7-(2-methoxyethoxy)-6-quinolinecarboxamide

HRID 387726Notes

Reaction equation

[C:1]([C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][C:12]=1[O:13][CH2:14][CH2:15][O:16][CH3:17])[N:9]=[CH:8][CH:7]=[C:6]2[O:18][C:19]1[CH:24]=[CH:23][C:22]([NH:25][C:26]([NH:28][C:29]2[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=2)=[O:27])=[CH:21][CH:20]=1)#[N:2].[OH-:36].[Na+].Cl>CS(C)=O.O>[F:35][C:32]1[CH:31]=[CH:30][C:29]([NH:28][C:26]([NH:25][C:22]2[CH:21]=[CH:20][C:19]([O:18][C:6]3[C:5]4[C:10](=[CH:11][C:12]([O:13][CH2:14][CH2:15][O:16][CH3:17])=[C:3]([C:1]([NH2:2])=[O:36])[CH:4]=4)[N:9]=[CH:8][CH:7]=3)=[CH:24][CH:23]=2)=[O:27])=[CH:34][CH:33]=1

Participants

Conditions

Temperature: 80 °C

Procedure

The N-(4-(6-cyano-7-(2-methoxyethoxy)-4-quinolyl)oxyphenyl)-N′-(4-fluorophenyl)urea (360 mg, 0.762 mmol) obtained in Example 10 was dissolved in dimethylsulfoxide (4.5 ml), and then 5N aqueous sodium hydroxide (1.5 ml) was added and the mixture was heated at 80° C. while stirring for 60 minutes. The reaction solution was cooled in an ice water bath, 2N hydrochloric acid (3.75 ml) was added for neutralization, and then the mixture was diluted with water (21 ml) and the precipitated crude crystals were filtered out. These were suspended in ethanol (20 ml) and subjected to sonication, and upon filtering out the crystals they were dried under reduced pressure to obtain the title compound (214 mg, 0.436 mmol, 57.3%) as gray crystals.

Workup

temperatureThe reaction solution was cooled in an ice water bath
customthe precipitated crude crystals
filtrationwere filtered out
customsubjected to sonication
filtrationupon filtering out the crystals they
customwere dried under reduced pressure

Sources & evidence

ORD record: ord-4a076820bbc74a548440b7756344f244
Source dataset: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08372981B2

Reaction notes

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