Tert-butyl 3-oxo-2,3,4,5,6,7-hexa­hydro-1H-pyrazolo[4,3-c]pyridine-5-carboxyl­ate

In the title compound, C(11)H(17)N(3)O(3), the pyrazole ring is approximately planar, with a maximum deviation of 0.005 (2) Å, and forms a dihedral angle of 5.69 (13)° with the plane through the six atoms of the piperidine ring. In the crystal, pairs of inter­molecular N—H⋯O hydrogen bonds form dimers with neighbouring mol­ecules, generating R (2) (2)(8) ring motifs. These dimers are further linked into two-dimensional arrays parallel to the bc plane by inter­molecular N—H⋯O and C—H⋯O hydrogen bonds.