HCID 19436771, compound → HCID 19436749, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 12.8 g (0.031 mole) 2-chloro-5-[4-chloro-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl]-4-fluorobenzenesulfonyl chloride in 100 mL acetic acid was added 40.7 g (0.62 mole) zinc powder. The slurry was stirred at 80° C. for 4 hours, allowed to cool and filtered through Celite®. The filtrate was poured into 1.0 L water, the solid filtered and dried. The solid was recrystallized from ethanol/water to give 10.2 g (95%) of 2-chloro-5-[4-chloro-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl]-4-fluorobenzenethiol as a yellow solid; mp 56°-58° C.

Provenance & Evidence