Pyridine → HCID 178522114, compound

Participants

Reaction Steps

After dissolving 391 g of 1-(3-aminophenyl)- 5-mercaptotetrazole hydrochloride in 800 ml of N,N-dimethylformamide in a nitrogen gas atmosphere, the mixture was cooled to a temperature below 0° C. After adding thereto 302 ml of pyridine, 294 g of phenyl chloroformate were added dropwise to the s-lution while cooling with stirring so that the liquid temperature was not over 0° C. After further stirring the mixture for one hour at a temperature below 0° C., the reaction mixture was added dropwise to 5 liters of a saturated aqueous sodium chloride solution followed by stirring for 30 minutes. Crystals formed were collected by filtration and washed with 2 liters of water to provide 495 g of the desired compound with a yield of 93%.

Provenance & Evidence