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1-Tert-butyl-4-isocyanatobenzene → 1-(4-Tert-butylphenyl)-3-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)urea

HRID 631504
Notes
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Reaction equation

HRID 631504 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][C:12]=1[O:13][CH3:14])[N:9]=[CH:8][N:7]=[C:6]2[O:15][C:16]1[CH:17]=[C:18]([CH:20]=[CH:21][CH:22]=1)[NH2:19].[C:23]([C:27]1[CH:32]=[CH:31][C:30]([N:33]=[C:34]=[O:35])=[CH:29][CH:28]=1)([CH3:26])([CH3:25])[CH3:24]>CN(C=O)C.O>[C:23]([C:27]1[CH:32]=[CH:31][C:30]([NH:33][C:34]([NH:19][C:18]2[CH:20]=[CH:21][CH:22]=[C:16]([O:15][C:6]3[C:5]4[C:10](=[CH:11][C:12]([O:13][CH3:14])=[C:3]([O:2][CH3:1])[CH:4]=4)[N:9]=[CH:8][N:7]=3)[CH:17]=2)=[O:35])=[CH:29][CH:28]=1)([CH3:26])([CH3:24])[CH3:25]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 27356951-Tert-butyl-4-isocyanatobenzeneHCID 498410023-[(6,7-Dimethoxy-4-quinazolinyl)oxy]aniline

Product 1

HCID 566724361-(4-Tert-butylphenyl)-3-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)ureaYield 38%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

To 3-(6,7-dimethoxyquinazolin-4-yloxy)aniline from Example 113A (89 mg, 0.3 mmol) in DMF (3 mL) was added 4-tert-butylphenyl isocyanate (54 μL, 0.3 mmol) and the solution stirred at 50° C. for 4h. The reaction was allowed to cool to room temperature, diluted with H2O, and extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, filtered, concentrated in vacuo, and purified by column chromatography (25-100% EtOAc/hexanes) to give 1-(4-tert-butylphenyl)-3-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)urea (54 mg, 0.11 mmol, 38%). 1H NMR (300 MHz, DMSO-d6) δ 8.83 (s, 1H), 8.65 (s, 1H), 8.57 (s, 1H), 7.60 (s, 1H), 7.56 (s, 1H), 7.40-7.21 (m, 7H), 6.91 (d, 1H), 3.99 (s, 6H), 1.25 (s, 9H); LC-MS (ESI) m/z 473 (M+H)+.

Workup

  1. temperatureto cool to room temperature
  2. extractionextracted with EtOAc
  3. washThe organic layer was washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. custompurified by column chromatography (25-100% EtOAc/hexanes)

Sources & evidence

ORD record
ord-9ed050bcc13c4d359e5791d02baeda91
Source dataset
uspto-grants-2016_04
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09320739B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes