Ethyl Acetate → 4-(azidomethyl)-5-chloro-1,3-dimethyl-1H-pyrazole

Participants

Reaction Steps

To a solution of compound 2 (538 mg, 3.36 mmol) in toluene (10 mL) was added DPPA (1.1 mL, 5.04 mmol) and DBU (0.6 mL, 6.72 mmol) at 0° C. After stirring for 1 hr, the reaction mixture was warmed to room temperature and stirred for 24 hr. EA (20 mL) was added and the mixture was washed with water, brine, concentrated to give a yellow solid which was used without further purification. LCMS (ESI) m/z=186 (M+H)+.

Provenance & Evidence