Abstract
It has been found that the reaction of meso-octamethylcalix[4]pyrrole with four equivalents of 6-nitroazolopyrimidine is accompanied by the C-C coupling of unsubstituted carbon atom in azines with P-position of pyrrole rings and results in the formation of tetrapyrimidine-substituted calix[4]pyrroles without introduction of any catalysts. Mono- and di-substituted calixpyrroles have been isolated.
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