Potassium Carbonate → Tert-butyl 3-(3-(methoxycarbonyl)benzyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl 4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decane-8-carboxylate (0.15 g, 0.45 mmol) and potassium carbonate (0.124 g, 0.9 mmol) in N,N-dimethylformamide (4 mL), was added methyl 3-(bromomethyl)benzoate (0.114 g, 0.5 mmol). After stirring at 60° C. for 60 hours, the reaction mixture was diluted with ethyl acetate (25 mL), washed with dilute citric acid, water and brine. The organic phase was dried over MgSO4, filtered and concentrated to a yellowish brown solid (0.2 g, 93%); 1H NMR (DMSO-d6): δ 1.45 (s, 9H), 1.64 (d, 2H, J=13.6 Hz), 2.41-2.49 (m, 2H), 3.48 (br, 2H), 3.85 (s, 3H), 3.86-3.90 (m, 2H), 4.59-4.64 (m, 4H), 6.68 (d, 2H, J=8.4 Hz), 6.77 (t, 1H, J=7.4 Hz), 7.17 (t, 2H, J=8 Hz), 7.54-7.60 (m, 2H), 7.89-7.92 (m, 2H); MS for C27H33N3O5 m/z 480.08 (M+H)+.

Provenance & Evidence