Hydrochloric Acid → HCID 67491539, compound

Participants

Reaction Steps

To a solution of tert-butyl 1′-tert-butyl-7′-oxo-1′,4′,6′,7′-tetrahydrospiro[piperidine-4,5′-pyrazolo[3,4-c]pyridine]-1-carboxylate (137 mg, 0.39 mmol) in ethyl acetate (4 mL) was added 4 N HCl in dioxane (2 mL). After stirring 1 hour at room temperature, the volatiles were removed under reduced pressure and the resultant colorless solid was triturated from heptane (10 mL) to yield 112 mg of the title compound as a colorless solid. +APCI (M+H) 263.3; 1H NMR (400 MHz, DMSO-d6, δ): 8.84 (m, 2H), 8.00 (s, 1H), 7.29 (s, 1H), 3.13 (d, J=6.1 Hz, 2H), 3.03 (br. s., 2H), 2.78 (s, 2H), 1.76 (m, 4H), 1.60 (s, 9H).

Provenance & Evidence