Perkin communications. Imidazole derivatives. Part 4. A novel and direct synthesis of 7H-pyrrolo-[1,2-a]imidazoles
Abstract
Functionalized 7H-pyrrolo[1,2-a]imidazoles (2) are obtained directly by a novel double transacylation reaction of 1-acylimidazoles (1) with dimethyl acetylenedicarboxylate (DMAD); the structure of one of the products (2b) has been determined by X-ray crystallography.