5-Methyl-2-nitro-4,5,6,7-tetrahydropyrazolo[1,5-A]pyrazine → 5-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazin-2-amine

Participants

Reaction Steps

To a solution of 5-methyl-2-nitro-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazine (67 mg, 0.37 mmol) in ethanol (15 mL) was treated with palladium on carbon (10%, 20 mg) and flushed with argon. The resulting mixture was stirred under a hydrogen (1 atm) overnight. The reaction mixture was filtered through a celite pad, and the pad washed with ethanol. The filtrate was concentrated in vacuo to give 5-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-amine (72 mg, quantitative) as a light yellow oil.

Provenance & Evidence