Sodium Iodide → tert-butyl 2-((8-(3-(3-cyclopropyl-2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl 2-((4-oxo-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (200 mg, 0.475 mmol, 1 equiv), 1-(3-chloropropyl)-3-cyclopropyl-1H-benzo[d]imidazol-2(3H)-one (118.75 mg, 0.475 mmol, 1 equiv), sodium iodide (28.5 mg, 0.19 mmol, 0.4 equiv) and potassium carbonate (131.3 mg, 0.95 mmol, 2 equiv) in 2-butanone was stirred at 81° C. for 16 h. After cooling the reaction mixture, the crude mixture was partitioned between ethyl acetate and water. The organic layer was dried over MgSO4, filtered, concentrated, and the crude residue was purified using the Biotage flash chromatography system (SNAP 10 g cartridge, Rf=0.5, gradient—1%-10% methanol in dichloromethane) to afford the title compound (230 mg, 76%); 1H NMR (400 MHz, DMSO-d6): δ 0.85-0.89 (m, 2H); 0.95-1.04 (m, 2H); 1.57 (s, 9H); 1.67 (d, 2H, J=12.4 Hz); 1.81 (t, 2H, J=6.4 and 6.8 Hz); 2.32-2.35 (t, 2H, J=6.8 Hz); 2.54-2.72 (m, 6H); 2.86-2.89 (m, 1H); 3.84-3.88 (t, 2H, J=6.8 and 6.4 Hz); 4.62 (s, 2H); 4.84 (s, 2H); 6.76-6.79 (t, 1H, J=7.2 Hz); 6.84-6.86 (d, 2H, J=8.4 Hz); 7.03-7.06 (t, 2H, J=5.6 and 6.8 Hz); 7.19-7.27 (m, 5H); 7.39-7.43 (t, 1H, J=7.6 and 7.2 Hz); 7.56-7.59 (t, 1H, J=8 and 6.4 Hz); 7.82-7.84 (d, 1H, J=7.6 Hz); MS for C38H45N5O4 m/z 636.12 (M+H)+.

Provenance & Evidence