Abstract
The ability of different reagents of the type R3XBr2, where R are various alkyl, alkoxide, phenyl, and phenoxide groups, and X is P, As and Sb, to promote an intramolecular cyclization of suitably substituted aromatic diamines has been investigated. The type of R group and X was found to have a great influence on the ability of these reagents to promote this type of cyclization. Best results were obtained when R[dbnd]OMe and X[dbnd]P.