Water → 6,7-Dimethoxy-2-(5-morpholin-4-ylmethyl-3,4-dihydro-1H-isoquinolin-2-yl)-3H-quinazolin-4-one

HRID 8729Notes

Reaction equation

Br[CH2:2][C:3]1[CH:12]=[CH:11][CH:10]=[C:9]2[C:4]=1[CH2:5][CH2:6][N:7]([C:13]1[NH:22][C:21](=[O:23])[C:20]3[C:15](=[CH:16][C:17]([O:26][CH3:27])=[C:18]([O:24][CH3:25])[CH:19]=3)[N:14]=1)[CH2:8]2.[NH:28]1[CH2:33][CH2:32][O:31][CH2:30][CH2:29]1.C(=O)(O)[O-].[Na+].O>CS(C)=O>[CH3:25][O:24][C:18]1[CH:19]=[C:20]2[C:15](=[CH:16][C:17]=1[O:26][CH3:27])[N:14]=[C:13]([N:7]1[CH2:6][CH2:5][C:4]3[C:9](=[CH:10][CH:11]=[CH:12][C:3]=3[CH2:2][N:28]3[CH2:33][CH2:32][O:31][CH2:30][CH2:29]3)[CH2:8]1)[NH:22][C:21]2=[O:23]

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 2-(5-bromomethyl-3,4-dihydro-1H-isoquinolin-2-yl)-6,7-dimethoxy-3H-quinazolin-4-one 23a (54 mg, 0.12 mmol), morpholine (12 mg, 0.13 mmol) and sodium bicarbonate (16 mg, 0.18 mmol) in dimethyl sulfoxide (0.5 mL) was heated to 80° C. with stirring for 18 h. After cooling to room temperature, water (2 mL) was added and the precipitated product was separated by filtration, rinsed with water and dried. 6,7-Dimethoxy-2-(5-morpholin-4-ylmethyl-3,4-dihydro-1H-isoquinolin-2-yl)-3H-quinazolin-4-one 701 was purified by flash chromatography eluting with 2% methanol in dichloromethane containing 0.2% of ammonium hydroxide. The product was converted to the hydrochloric acid salt. Yield 15 mg, mp. 227.9–229.6° C., [M+H]+=437.

Workup

temperatureAfter cooling to room temperature
customthe precipitated product was separated by filtration
washrinsed with water
customdried
custom6,7-Dimethoxy-2-(5-morpholin-4-ylmethyl-3,4-dihydro-1H-isoquinolin-2-yl)-3H-quinazolin-4-one 701 was purified by flash chromatography
washeluting with 2% methanol in dichloromethane containing 0.2% of ammonium hydroxide

Sources & evidence

ORD record: ord-d0069b677ce942f195f1c19229813036
Source dataset: uspto-grants-2006_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07091200B2

Reaction notes

Loading…