反应详情

7-Bromo-quinoline-2-carbaldehyde (354 mg, 1.50 mmol, prepared as described in EP 239746) was dissolved in 1,2-dichloroethane (15 mL) and 2,4-dimethoxybenzylamine (251 mg, 225 μL, 1.50 mmol) was added and the reaction mixture stirred for 5 minutes before sodium triacetoxyborohydride (477 mg, 2.25 mmol) was added. After 3.5 h stirring the reaction mixture was quenched with saturated sodium hydrogen carbonate solution and ethyl acetate was added. The organic layer was separated and washed with sodium hydrogen carbonate and the combined aqueous layers were extracted with ethyl acetate. The organic extracts were washed with saturated brine, dried over anhydrous sodium sulfate, filtered and evaporated to give the crude, title compound as a yellow gum (571 mg) which was used without further purification. LCMS (m/z) 387.0, 389.0 [M+H], Tr=1.57 min.

1. additionwas added
2. customwas quenched with saturated sodium hydrogen carbonate solution and ethyl acetate
3. additionwas added
4. customThe organic layer was separated
5. washwashed with sodium hydrogen carbonate
6. extractionthe combined aqueous layers were extracted with ethyl acetate
7. washThe organic extracts were washed with saturated brine
8. dry with materialdried over anhydrous sodium sulfate
9. filtrationfiltered
10. customevaporated