Sodium Thiosulfate → HCID 22032018, compound

Participants

Reaction Conditions

Reaction Steps

20 g methyl 5-(1-trityl-1H-3-pyrazolyl)-2-thiophene carboxylate and 10.6 g N-iodosuccinimide were stirred in 200 mL N,N-dimethylformamide at 80° C. for 24 hours. Additional N-iodosuccinimide, 10.6 g, was added thereto and stirred at 80° C. for 24 hours, and then an aqueous solution of sodium thiosulfate and an aqueous solution of sodium bicarbonate were added thereto and stirred for 1 hour, and the formed solid was collected by filtration. The solid was dissolved in dichloromethane and dried over magnesium sulfate, and the solvent was removed, whereby 24.5 g of the title compound was obtained as colorless crystals.

Provenance & Evidence