A novel synthetic approach to heterocycles containing the imidazole mo
iety based on the multihetero-Cope rearrangement is described. Oximes
are reacted with benzenecarboximidoyl chlorides 4 affording adducts th
at readily undergo the hetero-Cope rearrangement at slightly elevated
temperatures. Acid treatment of the resulting amidines 8 provides imid
azoles in very high yields.