反应详情

温度

85 °C

A solution of tert-butyl 5-(6-(2-chloroethoxy)-2-[(3-phenyl)phenyl)-7-methoxyquinazolin-4-ylamino)-1H-indazole-1-carboxylate (0.25 g, 0.40 mmole) in DMSO (3 mL) was cooled to 0° C. To this was added dimethylamine gas (bubbled into solution for 15 minutes) and the reaction was slowly heated to 85° C. and stirred for 2 h. The mixture was poured onto ice-water and the crude product was filtered. The product was then dissolved in a mixture of CH2Cl2 and CH3OH and the solution was concentrated in vacuo. The residue was purified via preparative TLC (SiO2, 10% CH2Cl2/CH3OH). To the crude product was added TFA (5 mL) and the reaction was stirred at RT for 1 h. The solution was concentrated in vacuo and the residue was triturated with ether, filtered and dried under vacuum to give 6-(2-(dimethylamino)ethoxy)-N-(1H-indazol-5-yl)-7-methoxy-2-(3-(phenyl)phenyl)quinazolin-4-amine (0.096 g, 0.18 mmole, 45% over 2 steps). MS 531 (M+1). HPLC retention time 5.18 mins.

1. additionThe mixture was poured onto ice-water
2. filtrationthe crude product was filtered
3. dissolutionThe product was then dissolved in a mixture of CH2Cl2 and CH3OH
4. concentrationthe solution was concentrated in vacuo
5. customThe residue was purified via preparative TLC (SiO2, 10% CH2Cl2/CH3OH)
6. additionTo the crude product was added TFA (5 mL)
7. stirringthe reaction was stirred at RT for 1 h
8. concentrationThe solution was concentrated in vacuo
9. customthe residue was triturated with ether
10. filtrationfiltered
11. customdried under vacuum