HCID 673691, compound → 1-(4-chlorobenzyl)-1H-pyrazol-3-amine

Participants

Reaction Steps

To a solution containing 1-(4-chloro-benzyl)-3-nitro-1H-pyrazole (101 mg, 0.42 mmol) in tetrahydrofuran (2 mL), anhydrous hydrazine (100 μL) was added to the clear solution. Raney nickel (˜100 mg washed 3 times with 5 mL of anhydrous tetrahydrofuran) was then added in tetrahydrofuran (300 μL). Gas evolved from the mixture and the reaction was allowed to proceed for 5 min, after which time the raney nickel was removed by filtration through a celite plug. The solvent was removed in vacuo to afford 1-(4-chloro-benzyl)-1H-pyrazol-3-ylamine as a yellow oil which was used in the following step with no further purification.

Provenance & Evidence