反应详情

A cooled (0° C.) solution of (rac)-4-(4-(trifluoromethyl)phenyl)-6,7-dihydro-5H-cyclopenta[c]pyridin-7-ol (example 83) (75 mg, 0.27 mmol) in DMF (1.4 mL) was treated with NaH (55% in oil, 18.7 mg, 0.43 mmol) and after ½ h with 3-(iodomethyl)-3-methyloxetane (209 mg, 0.59 mmol, synthesized by refluxing 3-(chloromethyl)-3-methyloxetane with 5 eq. sodium iodide in acetone overnight) in DMF (1 mL). After warming up to room temperature over 5 h, the reaction mixture was poured on aq. 10% KH2PO4 solution followed by extraction with Et2O (3×). The organic phases were washed once with aq. 10% NaCl solution. The combined organic phases were dried (Na2SO4), filtered and purified by flash chromatography (20 g SiO2, Telos-cartridge, 1 to 3% 2-propanol in CH2Cl2) to give the title compound (28 mg, 29%) as brown oil. MS: 364.5 (M+H+).

1. extractionfollowed by extraction with Et2O (3×)
2. washThe organic phases were washed once with aq. 10% NaCl solution
3. dry with materialThe combined organic phases were dried (Na2SO4)
4. filtrationfiltered
5. custompurified by flash chromatography (20 g SiO2, Telos-cartridge, 1 to 3% 2-propanol in CH2Cl2)