4-Chlorophenyl Isocyanate → HCID 56675821, compound

HRID 871548Notes

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].[Cl:23][C:24]1[CH:29]=[CH:28][C:27]([N:30]=[C:31]=[O:32])=[CH:26][CH:25]=1>C1COCC1>[Cl:23][C:24]1[CH:29]=[CH:28][C:27]([NH:30][C:31]([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:32])=[CH:26][CH:25]=1

Participants

Conditions

Temperature: 80 °C

Procedure

In a sealed reaction vessel, 3-(6,7-dimethoxyquinazolin-4-yloxy)aniline from Example 113A (100 mg, 0.34 mmol) was dissolved in 10 mL of dry THF. To this solution was added 4-chlorophenyl isocyanate (61 mg, 0.4 mmol). The reaction was heated to 80° C. for 2 hours. The solution was then concentrated to dryness and purified by silica gel chromatography eluting with an ethyl acetate/dichloromethane gradient 5-30% over 16 column volumes. The major peak was concentrated and recrystallized with ethyl acetate/hexanes, and the solid collected by vacuum filtration to give 26.53 mg. 1H (DMSO-d6) 8.9 (m, 2H), 8.5 (s, 1H), 7.8-7.2 (m, 9H), 6.9 (m, 1H), 4.1 (s, 6H) LCMS (ESI) m/z 515 (M+H)

Workup

concentrationThe solution was then concentrated to dryness
custompurified by silica gel chromatography
washeluting with an ethyl acetate/dichloromethane gradient 5-30% over 16 column volumes
concentrationThe major peak was concentrated
customrecrystallized with ethyl acetate/hexanes
filtrationthe solid collected by vacuum filtration
customto give 26.53 mg

Sources & evidence

ORD record: ord-5041cd4e325f4468b9f8d79d8b91ad32
Source dataset: uspto-grants-2015_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08969587B2

Reaction notes

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