2-Nitro-5-(oxetan-3-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine → 5-(Oxetan-3-yl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-amine

Participants

Reaction Steps

In a 250 mL round-bottomed flask, 2-nitro-5-oxetan-3-yl-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazine (674 mg, 2.99 mmol, Eq: 1.00) was combined with EtOH (50 ml) to give a light yellow suspension. The reaction mixture was vacuum flushed three times with argon then 10% Pd/C (159 mg, 1.5 mmol, Eq: 0.5) was added and the reaction mixture was stirred under hydrogen balloon overnight. The reaction was filtered through a pad of celite. The celite pad was washed with ethanol. The combined filtrate and washes were concentrated in vacuo to afford the desired product (555 mg). (M+H)+=195 m/e.

Provenance & Evidence