Water → 1-Hexanoyl 2-amino benzimidazole

참여 물질

반응 단계

A solution of 2-amino benzimidazole (8 g, or 0.060 mole) and triethylamine (10 g, or 0,099 mole) in 150 ml of anhydrous acetone, is chilled to a temperature of -65° C. under nitrogen. To this solution is added 12.1 g (0.09 mole) hexanoyl chloride in solution in 150 ml of anhydrous acetone at a temperature of -60° C. After the mixture has been agitated at this temperature for around 1 hour, 100 ml of water is added to it, at a temperature of between -30° and -20° C., after which it is all poured into 500 ml of water. The precipitate is filtered, and dried in a dessicator. After purification, 7 g (50.5% yield) is obtained of a crystallized compound having a melting point of 200° C. and the following structure (90% purity): ##STR5##

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