3-(6,7-Dimethoxyquinazolin-4-yloxy)-2-fluoroaniline → 1-(5-(1,3-Difluoro-2-methylpropan-2-yl)isoxazol-3-yl)-3-(3-(6,7-dimethoxyquinazolin-4-yloxy)-2-fluorophenyl)urea

HRID 1918071Notes

Reaction equation

HRID 1918071 reaction equation
[F:1][CH2:2][C:3]([C:7]1[O:11][N:10]=[C:9]([NH:12][C:13](=[O:21])OC2C=CC=CC=2)[CH:8]=1)([CH3:6])[CH2:4][F:5].[CH3:22][O:23][C:24]1[CH:25]=[C:26]2[C:31](=[CH:32][C:33]=1[O:34][CH3:35])[N:30]=[CH:29][N:28]=[C:27]2[O:36][C:37]1[C:38]([F:44])=[C:39]([CH:41]=[CH:42][CH:43]=1)[NH2:40]>C1COCC1>[F:5][CH2:4][C:3]([C:7]1[O:11][N:10]=[C:9]([NH:12][C:13]([NH:40][C:39]2[CH:41]=[CH:42][CH:43]=[C:37]([O:36][C:27]3[C:26]4[C:31](=[CH:32][C:33]([O:34][CH3:35])=[C:24]([O:23][CH3:22])[CH:25]=4)[N:30]=[CH:29][N:28]=3)[C:38]=2[F:44])=[O:21])[CH:8]=1)([CH3:6])[CH2:2][F:1]

Participants

4

Reactant 2

HCID 178195183-(6,7-Dimethoxyquinazolin-4-yloxy)-2-fluoroanilineHCID 66876148Phenyl 5-(1,3-difluoro-2-methylpropan-2-yl)isoxazol-3-ylcarbamate

Product 1

HCID 582677371-(5-(1,3-Difluoro-2-methylpropan-2-yl)isoxazol-3-yl)-3-(3-(6,7-dimethoxyquinazolin-4-yloxy)-2-fluorophenyl)ureaYield 42.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of phenyl 5-(1,3-difluoro-2-methylpropan-2-yl)isoxazol-3-ylcarbamate (prepared as described in Example 162A steps 1 and 2) (211 mg, 0.714 mmol), 3-(6,7-dimethoxyquinazolin-4-yloxy)-2-fluoroaniline (prepared as described in Example 265A steps 1 through 3) (150 mg, 0.475 mmol) and N,N-4-(dimethylamino)pyridine (10 mg, 0.082 mmol) in THF (5 mL) was stirred at rt for 36 h. The reaction mixture was concentrated under reduced pressure to give the crude product. Purification via silica gel flash chromatography (eluting with a gradient of 20% ethyl acetate in hexanes to 100% ethyl acetate) afforded 1-(5-(1,3-difluoro-2-methylpropan-2-yl)isoxazol-3-yl)-3-(3-(6,7-dimethoxyquinazolin-4-yloxy)-2-fluorophenyl)urea (104 mg, 42%) as a colorless solid. 1H NMR (300 MHz, DMSO-d6) δ 9.96 (brs, 1H), 8.87 (brs, 1H), 8.58 (s, 1H), 8.08 (m, 1H), 7.59 (s, 1H), 7.43 (s, 1H), 7.27 (m, 1H), 7.15 (m, 1H), 6.81 (s, 1H), 4.66 (d, J=47 Hz, 4H), 4.01 (s, 6H), 1.34 (s, 3H); LC-MS (ESI) m/z 518 (M+H)+.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. customto give the crude product
  3. customPurification via silica gel flash chromatography (
  4. washeluting with a gradient of 20% ethyl acetate in hexanes to 100% ethyl acetate)

Sources & evidence

ORD record
ord-5d9fb07533334dcdbc10771eb114b9b7
Source dataset
uspto-grants-2013_12
Patent number
US08618289B2

Reaction notes

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