反应详情

To an ethanol (6 mL) suspension of 0.20 g of ethyl=4-{3-[4-(3-{4-[ethoxy(imino)methyl]phenoxy}propyl)-1-piperidinyl]propoxy}benzimidate were added 0.61 g of O-(2,2,2-trifluoroethyl)hydroxylamine hydrochloride and 0.84 mL of triethylamine at room temperature, which was then stirred at the same temperature for one week. Chloroform and water were added to the reaction solution. The organic layer was separated, washed with a saturated sodium chloride aqueous solution, and then dried with anhydrous magnesium sulfate, followed by distilling off the solvent under reduced pressure. The resultant residue was purified using silica gel column chromatography (eluent; chloroform:ethanol=30:1), to which hexane was then added, followed by collecting the solid by filtration to provide 0.12 g of 4-{3-[4-(3-{4-[amino(2,2,2-trifluoroethoxyimino)methyl]phenoxy}propyl)-1-piperidinyl]propoxy}benzamide=O-(2,2,2-trifluoroethyl)oxime as white solid form.

1. customThe organic layer was separated
2. washwashed with a saturated sodium chloride aqueous solution
3. dry with materialdried with anhydrous magnesium sulfate
4. distillationby distilling off the solvent under reduced pressure
5. customThe resultant residue was purified
6. additionto which hexane was then added
7. customby collecting the solid
8. filtrationby filtration