Ammonia → HCID 44251422, compound

Participants

Reaction Steps

In a sealed tube a solution of Methyl (2R, 5S,7R)-8-{[{(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethyl}(methyl)amino]carbonyl}-7-(4-fluoro-2-methylphenyl)-1,8-diazaspiro[4.5]decane-2-carboxylate (Intermediate 12, 21.6 mg, 0.036 mmol) in 7N Ammonia in MeOH (5 mL, 35.0 mmol) was stirred at 25° C. for 1 day. The solvent was evaporated to dryness and the crude was purified by silica cartridge (2 g) (at first EtOAc and then 97.5:2.5 DCM/0.5 M NH3 in MeOH) to give 17.8 mg of the title compound as a white foam. 1H NMR (500 MHz, DMSO-d6) δ ppm 8.00 (s, 1H) 7.70 (s, 2H) 7.28 (d, 1H) 7.15 (dd, 1H) 7.03 (d, 1H) 6.92 (dd, 1H) 6.78 (t, 1H) 5.31 (q, 1H) 4.14 (dd, 1H) 3.47 (t, 1H) 3.27-3.38 (m, 1H) 2.75 (s, 3H) 2.76 (t, 1H) 2.32 (s, 3H) 2.05-2.15 (m, 1H) 1.68-1.85 (m, 3H) 1.52-1.68 (m, 3H) 1.47 (d, 3H) 1.39-1.54 (m, 1H). NMR analysis revealed the presence of a large amount of DCM (˜55% w/w). HPLC: Rt 4.90 mins. This batch was used directly in the next step.

Provenance & Evidence