Dimethylacetamide → 6-{[5-(2,2-diethoxyethoxy)pyrimidin-2-yl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)quinazoline-4-amine

HRID 81630

Reaction equation

Cl[C:2]1[N:7]=[CH:6][C:5]([O:8][CH2:9][CH:10]([O:14][CH2:15][CH3:16])[O:11][CH2:12][CH3:13])=[CH:4][N:3]=1.CC(C)([O-])C.[K+].CN(C)C(=O)C.[CH3:29][N:30]1[CH:34]=[CH:33][C:32]([NH:35][C:36]2[C:45]3[C:40](=[CH:41][CH:42]=[C:43]([OH:46])[CH:44]=3)[N:39]=[CH:38][N:37]=2)=[N:31]1>O>[CH2:12]([O:11][CH:10]([O:14][CH2:15][CH3:16])[CH2:9][O:8][C:5]1[CH:4]=[N:3][C:2]([O:46][C:43]2[CH:44]=[C:45]3[C:40](=[CH:41][CH:42]=2)[N:39]=[CH:38][N:37]=[C:36]3[NH:35][C:32]2[CH:33]=[CH:34][N:30]([CH3:29])[N:31]=2)=[N:7][CH:6]=1)[CH3:13]

Participants

Conditions

Temperature: 200 °C

Procedure

2-Chloro-5-(2,2-diethoxyethoxy)pyrimidine (225 mg, 0.91 mmol) obtained in Example 7 and potassium tert-butoxide (116 mg, 1.04 mmol) were added to an N,N-dimethylacetamide solution (1 ml) of 4-[(1-methyl-1H-pyrazol-3-yl)amino]quinazolin-6-ol (100 mg, 0.42 mmol), and stirred at 200° C. for 18 hours under a nitrogen atmosphere in a sealed tube. The reaction solution was cooled with ice, water was added, and extracted with chloroform. The organic layer was washed with water, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (Moritex, acetone:hexane=2:3) to obtain 6-{[5-(2,2-diethoxyethoxy)pyrimidin-2-yl]oxy}-N-(1-methyl-1H-pyrazol-3-yl)quinazoline-4-amine (177 mg, yield: 95%) as a pale orange amorphous solid.

Workup

additionwas added
extractionextracted with chloroform
washThe organic layer was washed with water
dry with materialdried over anhydrous sodium sulfate
concentrationconcentrated under reduced pressure
customThe obtained residue was purified by silica gel column chromatography (Moritex, acetone:hexane=2:3)

Sources & evidence

ORD record: ord-2938614027de430daadc848c4b435804
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08846700B2

Linked notes

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