Sodium Iodide → Tert-butyl 3-((1-(4-fluorophenyl)-4-oxo-8-(4-oxo-4-phenylbutyl)-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl 3-((1-(4-fluorophenyl)-4-oxo-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (250 mg, 0.57 mmol, 1 equiv), 4-chloro-1-phenylbutan-1-one (91.3 μl, 0.57 mmol, 1 equiv), sodium iodide (34 mg, 0.23 mmol, 0.4 equiv) and potassium carbonate (158 mg, 1.14 mmol, 2 equiv) in 2-butanone was stirred at 81° C. for 16 h. After cooling, the reaction mixture was filtered, concentrated in vacuo and was purified using the Biotage flash chromatography system (SNAP 10 g cartridge, Rf=0.45, gradient—1%-10% methanol in dichloromethane) to afford the title compound (100 mg, 46%); 1H NMR (400 MHz, DMSO-d6): δ 1.53 (s, 9H); 1.59-1.63 (m, 2H); 1.82 (t, 2H, J=7.2 and 6.4 Hz); 2.19-2.23 (m, 2H); 2.37-2.39 (m, 2H); 2.70 (d, 4H, J=7.2 Hz); 3.02 (t, 2H, J=6.8 and 6.4 Hz); 4.54 (s, 2H); 4.59 (s, 2H); 6.84 (bs, 2H); 7.02 (t, 2H, J=9.6 and 8.8 Hz); 7.48-7.54 (m, 2H); 7.63 (t, 1H, J=8 Hz); 7.79-7.84 (m, 2H); 7.95-7.98 (m, 2H); MS for C35H40FN3O4 m/z 586.5 (M+H)+.

Provenance & Evidence