Abstract
Ethyl (E)- and (Z)-3-aryl-3-chloro-2-cyanopropenoates react stereoselectively with 1,2-diamines at room temperature to give ethyl (Z)-3-(2-aminophenylamino)-3-aryl-2-cyanopropenoates, whereas at higher temperatures cyclisation takes place and imidazoles and imidazolines are formed in moderate to high yields.
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