Pyridine → 4-Bromo-1-trityl-1H-pyrazole

Participants

Reaction Conditions

Reaction Steps

In a 75 mL sealed tube, 4-bromopyrazole (1.0 g, 6.8 mmol), pyridine (21.0 mL, 258 mmol), triphenylmethyl chloride (2.1 g, 7.5 mmol), and 4-dimethylaminopyridine (0.17 g, 1.4 mmol) were added. The mixture was stirred at 80° C. for 24 hours. The mixture was diluted with water, and the solids which crashed out were filtered, rinsed with water and air-dried to yield 4-bromo-1-trityl-1H-pyrazole as a white solid.

Provenance & Evidence