Diethylene Glycol Monoethyl Ether → 6-[4-(4-(5-Carbamoylbenzimidazol-1-yl)butyl)piperazino]-1,4-benzodioxane

Beteiligte Stoffe

Reaktionsschritte

A mixture of 4.16 g of 6-[4-(4-(5-cyanobenzimidazol-1-yl)butyl)piperazino]-1,4-benzodioxane, 2.4 g of NaOH, 50 ml of H2O and 40 ml of diethylene glycol monoethyl ether is stirred at a bath temperature of 140° for 3 hours. The mixture is then cooled to room temperature, worked up in the conventional manner and gives 6-[4-(4-(5-carbamoylbenzimidazol-1-yl)butyl)piperazino]-1,4-benzodioxane.

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