ChemInform Abstract: One-Pot Synthesis of Multisubstituted Benzimidazoles via Sequential Ugi and Catalytic Aza-Wittig Reaction Starting from 2-Aminobenzoyl Azides.

This four-component reaction of 2-aminobenzoyl azides, aldehydes, carboxylic acids, and isocyanides gives Ugi-products as intermediates, which are converted to isocyanates in refluxing toluene. [ABSTRACT FROM AUTHOR]