Sodium Hydroxide → HCID 178457593, Verbindung

Beteiligte Stoffe

Reaktionsschritte

A stirred mixture of 15.5 g (0.0687 mole) of α-methyl-p-trifluoromethylbenzylamine hydrochloride and 9.55 g (0.0756 mole) of 1-i-propyl-3-cyanoguanidine is immersed in a 190° C oil bath for ten minutes. The melt is cooled to room temperature, dissolved in 100 ml of water, made alkaline with 40% sodium hydroxide solution and extracted twice with 200 ml of ether. The combined ether extracts are dried over potassium carbonate, filtered, and the ether solution made strongly acidic with a saturated ethereal hydrochloric acid ether solution. The precipitate is collected on a filter, washed twice with 50 ml of anhydrous ether, and dried at 40°C/125 mm. for 5 hours. The dihydrochloride is dissolved in 50 ml of water, made strongly alkaline with 40% sodium hydroxide solution, and extracted twice with 100 ml of ether. The combined ether extracts are dried over potassium carbonate, filtered, and the ether solution made strongly acidic with a saturated ethereal hydrochloric acid solution. The precipitate is collected on a filter, washed twice with 50 ml of anhydrous ether, and dried at 40° C/125 mm. to obtain 1-(α-methyl-p-trifluoromethylbenzyl)-5-i-propylbiguanide dihydrochloride.

Herkunft & Nachweise