Pyridine → HCID 86740074, compound

Participants

Reaction Steps

To 30 ml of anhydrous pyridine, was added 2.7 g of 4-amidino-2-chlorophenol methanesulfonate. To the mixture, while being cooled in ice, was added 1.4 g of benzoyl chloride. The mixture was stirred for 30 minutes, while being cooled in ice, then for 5 hours at room temperature. The reaction mixture was mixed with 100 ml of ethyl ether to allow an oily substance to separate out. The oily substance was dissolved in 20 ml of methanol and poured into a saturated aqueous sodium hydrogencarbonate solution. The precpitated crystals were collected by filtration and washed with water, then with acetone. The washed crystals were added to 20 ml of methanol and admixed with 2.5 g of methanesulfonic acid. The insolubles were removed by filtration and 100 ml of ethyl ether was added to the filtrate. The precipitated colorless crystals were collected by filtration to obtain 2.5 g of 4-amidino-2-chlorophenyl benzoate methanesulfonate.

Provenance & Evidence