Sodium Iodide → Tert-butyl 2-((4-oxo-8-(3-(2'-oxospiro[cyclopropane-1,3'-indoline]-1'-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl 2-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (0.2 g, 0.47 mmol), sodium iodide (0.021 g, 0.14 mmol) and potassium carbonate (0.097 g, 0.7 mmol) in 2-butanone (5 mL), was added 1′-(3-chloropropyl)spiro[cyclopropane-1,3′-indolin]-2′-one (0.112 g, 0.47 mmol). After stirring at 78° C. for 2 hours, the reaction mixture was filtered and isolated by Biotage flash chromatography (1-10% methanol/dichloromethane) to obtain the title compound (0.18 g, 62%); 1H NMR (DMSO-d6): δ 1.51 (t, 4H, J=7.2 Hz), 1.57 (s, 9H), 1.67 (d, 2H, J=12.4 Hz), 1.79 (t, 2H, J=6.8 Hz), 2.36 (t, 2H, J=6.8 Hz), 2.54-2.74 (m, 6H), 3.81 (t, 2H, J=7.2 Hz), 4.62 (s, 2H), 4.84 (s, 2H), 6.76 (t, 1H, J=7.2 Hz), 6.84 (d, 2H, J=8 Hz), 6.96-7.02 (m, 2H), 7.17-7.27 (m, 5H), 7.41 (t, 1H, J=6.8 Hz), 7.57 (t, 1H, J=7.6 Hz), 7.83 (dd, 1H, J=8 and 1.2 Hz); MS for C38H44N4O4 m/z 621.12 (M+H)+.

Provenance & Evidence