4-Fluorophenyl isocyanate → N-(4-(7-(benzyloxy)-6-cyano-4-quinolyl)oxyphenyl)-N'-(4-fluorophenyl)urea

HRID 387721Notes

Reaction equation

HRID 387721 reaction equation
[NH2:1][C:2]1[CH:28]=[CH:27][C:5]([O:6][C:7]2[C:16]3[C:11](=[CH:12][C:13]([O:19][CH2:20][C:21]4[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=4)=[C:14]([C:17]#[N:18])[CH:15]=3)[N:10]=[CH:9][CH:8]=2)=[CH:4][CH:3]=1.[F:29][C:30]1[CH:35]=[CH:34][C:33]([N:36]=[C:37]=[O:38])=[CH:32][CH:31]=1>C1(C)C=CC=CC=1.C(#N)C>[CH2:20]([O:19][C:13]1[CH:12]=[C:11]2[C:16]([C:7]([O:6][C:5]3[CH:4]=[CH:3][C:2]([NH:1][C:37]([NH:36][C:33]4[CH:34]=[CH:35][C:30]([F:29])=[CH:31][CH:32]=4)=[O:38])=[CH:28][CH:27]=3)=[CH:8][CH:9]=[N:10]2)=[CH:15][C:14]=1[C:17]#[N:18])[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1

Participants

5

Reactant 2

HCID 709554-Fluorophenyl isocyanateHCID 229368314-(4-Aminophenoxy)-7-(benzyloxy)-6-cyanoquinoline

Product 1

HCID 22936525N-(4-(7-(benzyloxy)-6-cyano-4-quinolyl)oxyphenyl)-N'-(4-fluorophenyl)ureaYield 91.9%

Reagents, catalysts & solvents 2

HCID 1140TolueneSolventHCID 6342AcetonitrileSolvent

Conditions

Temperature
120 °C

Procedure

4-(4-Aminophenoxy)-7-(benzyloxy)-6-cyanoquinoline (7.776 g, 21.2 mmol) was dissolved in a toluene (400 ml) and acetonitrile (200 ml) mixed solvent, and then 4-fluorophenyl isocyanate (3.68 ml, 31.7 mmol) was added and the mixture was heated to reflux at 120° C. for 1 hour. The reaction solution was concentrated under reduced pressure, the residue was suspended in tetrahydrofuran (150 ml), and then hexane (150 ml) was added, sonication was performed, and the precipitated crystals were filtered out and dried under reduced pressure to obtain N-(4-(7-(benzyloxy)-6-cyano-4-quinolyl)oxyphenyl)-N′-(4-fluorophenyl)urea (9.81 g, 19.4 mmol, 91.9%) as light brown crystals. These were dissolved in trifluoroacetic acid (100 ml) and thioanisole (9.13 ml, 77.7 mmol) under a nitrogen atmosphere, and the solution was stirred at 60° C. for 12 hours. The reaction solution was concentrated under reduced pressure, and after adding tetrahydrofuran (50 ml) and then 1N aqueous sodium hydroxide (150 ml) and water (150 ml) to the residue, the mixture was stirred and the precipitated crystals were filtered out and washed with water, diethyl ether and ethyl acetate and dried at 70° C. to obtain the title compound (3.646 g, 8.36 mmol, 43.0%) as yellow crystals.

Workup

  1. additionmixed solvent
  2. temperaturethe mixture was heated
  3. concentrationThe reaction solution was concentrated under reduced pressure
  4. additionhexane (150 ml) was added
  5. customsonication
  6. filtrationthe precipitated crystals were filtered out
  7. customdried under reduced pressure

Sources & evidence

ORD record
ord-7bf530b465d94ab0abc4866c8e771d3e
Source dataset
uspto-grants-2013_02
Patent number
US08372981B2

Reaction notes

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