Keywords: Arduengo imidazoles.png Synthesis of substituted en imidazoles Reference US patent reference 6 177 575 2001 01 23 en Anthony J Arduengo III Process for Manufacture of Imidazoles en wikipedia 2006-12-26 Rifleman 82 wikipedia en chemical </nowiki> Debus-Radziszewski imidazole synthesis Carbonyl compounds Primary amines |