Iodine → 2-(3,5-dimethyl-4-(2-morpholinoethoxy)phenyl)-5,7-dimethoxyquinazolin-4(3H)-one

HRID 336667Notes

Reaction equation

[NH2:1][C:2]1[CH:10]=[C:9]([O:11][CH3:12])[CH:8]=[C:7]([O:13][CH3:14])[C:3]=1[C:4]([NH2:6])=[O:5].[CH3:15][C:16]1[CH:17]=[C:18]([CH:21]=[C:22]([CH3:33])[C:23]=1[O:24][CH2:25][CH2:26][N:27]1[CH2:32][CH2:31][O:30][CH2:29][CH2:28]1)[CH:19]=O.II.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH3:33][C:22]1[CH:21]=[C:18]([C:19]2[NH:6][C:4](=[O:5])[C:3]3[C:2](=[CH:10][C:9]([O:11][CH3:12])=[CH:8][C:7]=3[O:13][CH3:14])[N:1]=2)[CH:17]=[C:16]([CH3:15])[C:23]=1[O:24][CH2:25][CH2:26][N:27]1[CH2:32][CH2:31][O:30][CH2:29][CH2:28]1

Participants

Conditions

Temperature: 70 °C

Procedure

To a solution of 2-amino-4,6-dimethoxybenzamide (451 mg, 2.3 mmol) and 3,5-dimethyl-4-(2-morpholin-4-yl-ethoxy)-benzaldehyde (550 mg, 2.09 mmol) in N,N-dimethyl formamide (20 mL), iodine (636 mg, 2.5 mmol) and potassium carbonate (288 mg, 2.09 mmol) were added and the reaction mixture was stirred at 70° C. for 48 h. The reaction mixture was poured into ice. The mixture was extracted with ethyl acetate. The organic layer was washed with water, brine and dried over anhydrous Na2SO4. Removal of the solvent gave the crude product was purified by column chromatography and converted to the hydrochloride salt of 2-(3,5-dimethyl-4-(2-morpholinoethoxy)phenyl)-5,7-dimethoxyquinazolin-4(3H)-one (40 mg, 4%) as an off-white solid. Selected data: MS (ES) m/z: 440.1; MP 185-187° C. (HCl salt).

Workup

additionThe reaction mixture was poured into ice
extractionThe mixture was extracted with ethyl acetate
washThe organic layer was washed with water, brine
dry with materialdried over anhydrous Na2SO4
customRemoval of the solvent

Sources & evidence

ORD record: ord-5ed75fa680c446c7b0f109a9a9e6a563
Source dataset: uspto-grants-2014_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08889698B2

Reaction notes

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