Heterocyclic Derivatives of Fullerene C60. 1. Synthesis of New Fulleropyrazolines by the 1,3-Dipolar Cycloaddition of Nitrile Imines

Abstract

New stable [6,6]-closed cycloadducts, fulleropyrazolines containing aryl, hetaryl, trifluoromethyl, and other substituents in the five-membered ring, have been obtained by the 1,3-dipolar cycloaddition of nitrile imines to C60. Two methods of generating nitrile imines in situ have been used, the dehydrohalogenation of the corresponding hydrazonoyl halides by the action of triethylamine and the thermal decomposition of 2,5-diaryltetrazoles.