Special features of 1,3-dipolar cycloaddition of n-methylazomethinylid to nitrobenzazoles

Abstract

Synthetic approaches to 1,3-dipolar cycloaddition of N-methylazomethinylid to mononitrobenzazole are described. The geometric and electronic structures have been studied by quantum chemical methods (HF/STO-3 G and B3LYP/6-31 G) and the reactivity indexes of compounds have been estimated. It was shown that 1,3-dipolar cycloaddition of N-methylazomethinylid to the dipolarophile has a polar character and proceeds in accordance with the normal (noninversion) electronic distribution. © 2011 Springer Science+Business Media, Inc.