Water → 1-(2-Chlorophenyl)-3-methyl-5-piperidin-1-yl-2-[4-(4,4,4-trifluorobutoxy)phenyl]-1,5,6,7-tetrahydropyrrolo[3,2-c]pyridine-4-one

Participants

Reaction Conditions

Reaction Steps

Potassium carbonate (0.19 g, 1.38 mmol) was added to a solution of 1-(2-chlorophenyl)-2-(4-hydroxyphenyl)-3-methyl-5-piperidin-1-yl-1,5,6,7-tetrahydropyrrolo[3,2-c]pyridine-4-one, from Ex. 1, Step 8 (0.50 g, 1.15 mmol) in DMF (30 ml) followed by 1-iodo-4,4,4-trifluorobutane (328 mg, 1.38 mmol). The reaction mixture was heated at 80° C. overnight. TLC showed very little conversion to starting material; 656 mg (2 eqv.) 1-iodo-4,4,4-trifluorobutane and 380 mg (2 eqv.) K2CO3 were added and heating continued for one hour. After cooling to rt, water was added and the product extracted with EtOAc (×3). The combined organic extracts were washed with brine (×2), dried (Na2SO4), filtered and concentrated. Flash chromatography (heptane:EtOAc gradient) afforded 250 mg (40%) of the title compound as a colorless solid.

Provenance & Evidence