反应详情

Methyl 5-{[(4-nitrophenoxy)carbonyl]oxy}nicotinate (723 mg) was added to an acetonitrile (10 ml) solution of 3-[2-(4-piperidyl)ethyl]benzonitrile hydrochloride (475 mg) and TEA (0.58 ml), followed by stirring overnight at room temperature. The reaction liquid was diluted with EtOAc, followed by washing with an aqueous saturated sodium hydrogencarbonate solution and drying over anhydrous magnesium sulfate. The solvent was evaporated, the resulting residue was subjected to basic silica gel column chromatography (eluent: hexane:EtOAc=1:1 (v/v)) and the side-product, nitrophenol was removed. Then, this was purified by silica gel column chromatography (eluent: hexane:EtOAc=3:2 (v/v)) to obtain methyl 5-[({4-[2-(3-cyanophenyl)ethyl]-1-piperidyl}carbonyl)oxy]nicotinate (284 mg).

1. customThe reaction liquid
2. washby washing with an aqueous saturated sodium hydrogencarbonate solution
3. dry with materialdrying over anhydrous magnesium sulfate
4. customThe solvent was evaporated
5. customthe side-product, nitrophenol was removed
6. customThen, this was purified by silica gel column chromatography (eluent: hexane:EtOAc=3:2 (v/v))