Dimethylformamide → 2-[6-(3-Chloro-propoxy)-benzoimidazol-1-yl]-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid amide

Beteiligte Stoffe

Reaktionsschritte

A mixture of 0.370 g (1 mmole) of 4-(3-chloro-phenyl)-2-(6-hydroxy-benzoimidazol-1-yl)-thiazole-5-carboxylic acid amide (I.25d), 3 mL of dimethylformamide, 1.6 g (5 mmole) of cesium carbonate and 0.297 mL (3 mmole) of 1-bromo-3-chloro-propane was heated at 100 degrees for 1 hour. The cooled mixture was diluted with 20 mL of water and the resulting precipitate collected by filtration. The solid was triturated with diethyl ether to give 0.355 g of 2-[6-(3-chloro-propoxy)-benzoimidazol-1-yl]-4-(3-chloro-phenyl)-thiazole-5-carboxylic acid amide (I.34a) as a brown solid.

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