A mild and efficient one-pot synthesis of 2-dihydroimidazoles from aldehydes

The reactions of various aldehydes and 1,2-diamines followed by NXS treatment proceed at 0 degrees C to give the corresponding dihydroimidazoles in high yields. The reaction is mild, and many functional groups such as halogens, nitrites, and esters can exist. (c) 2005 Elsevier Ltd. All rights reserved.