反应详情

To a stirred suspension of 4-(4-nitronaphthalen-1-yloxy)pyridin-2-amine (71.8 g, 255 mmol) in dry DCM (1.1 L) and DIPEA (84.0 mL, 511 mmol), cooled in an ice bath, was added dropwise 2-methoxyacetyl chloride (35.0 mL, 383 mmol) over 20 min. The resulting red solution was stirred at RT for 1 hr and was then treated with a solution of NH3 in MeOH (7 M, 100 mL). A precipitate formed immediately and the reaction mixture was stirred for a further 15 min and the volatiles were evaporated in vacuo. The solid residue was triturated with water (900 mL), collected by filtration and washed with water (2×250 mL) to give the title compound as a yellow solid (89.1 g, 96%): m/z 354 (M+H)+ (ES+).

1. temperaturecooled in an ice bath
2. customA precipitate formed immediately
3. stirringthe reaction mixture was stirred for a further 15 min
4. customthe volatiles were evaporated in vacuo
5. customThe solid residue was triturated with water (900 mL)
6. filtrationcollected by filtration
7. washwashed with water (2×250 mL)