Cesium carbonate → 3-(6-(Benzyloxy)-7-methoxyquinazolin-4-yloxy)aniline

HRID 1917820Notes

Reaction equation

[CH2:1]([O:8][C:9]1[CH:10]=[C:11]2[C:16](=[CH:17][C:18]=1[O:19][CH3:20])[N:15]=[CH:14][N:13]=[C:12]2Cl)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[NH2:22][C:23]1[CH:24]=[C:25]([OH:29])[CH:26]=[CH:27][CH:28]=1.C([O-])([O-])=O.[Cs+].[Cs+]>C1COCC1>[CH2:1]([O:8][C:9]1[CH:10]=[C:11]2[C:16](=[CH:17][C:18]=1[O:19][CH3:20])[N:15]=[CH:14][N:13]=[C:12]2[O:29][C:25]1[CH:24]=[C:23]([CH:28]=[CH:27][CH:26]=1)[NH2:22])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 75 °C

Procedure

To a solution of 6-(benzyloxy)-4-chloro-7-methoxyquinazoline (3.3 g, 0.01097 mol) and 3-aminophenol (1.2 g, 0.01097 mol) in THF (70 mL), Cs2CO3 (5.36 g, 0.0164 mol) was added at room temperature. The reaction mixture was stirred at 75° C. for 25 hr. The mixture was filtered and the solid was washed with ethyl acetate (100 mL). The organic phase was washed with water, brine and dried over MgSO4. The solvent was evaporated under vacuum and the solid was triturated with ethyl ether (20 mL). The solid was filtered and washed with ethyl ether to afford 3-(6-(benzyloxy)-7-methoxyquinazolin-4-yloxy)aniline (3.72 g, 90% yield). 1HNMR (DMSO-d6): δ 8.55 (s, 1H), 7.66 (s, 1H,), 7.46 (m, 8H), 7.08 (t, 1H), 6.49 (d, 1H), 6.40 (m, 2H), 5.30 (s, 2H), 4.02 (s, 3H). LC-MS (ESI) m/z 508 (M+H)+.

Workup

filtrationThe mixture was filtered
washthe solid was washed with ethyl acetate (100 mL)
washThe organic phase was washed with water, brine
dry with materialdried over MgSO4
customThe solvent was evaporated under vacuum
customthe solid was triturated with ethyl ether (20 mL)
filtrationThe solid was filtered
washwashed with ethyl ether

Sources & evidence

ORD record: ord-b736de18782f4b8da0cf09d3e7a1148f
Source dataset: uspto-grants-2013_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08618289B2

Reaction notes

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