Abstract
The semiempirical quantum-chemical method PM3 has been used in a study of the electronic and spatial structure of dipyrrolo[l , 2-a; 2′,1′-cjpyrazines and 5,6-dihydrodipyrrolo[1,2-a; 2′,1′-cjpyrazines, and also their reactivities in electrophilic substitution reactions (protonation, acylation).
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