Abstract
Novel unusual double recyclization of both pyrrole and pyrylium cores of 5-alkyl-7,8-dimethoxy-2-phenylbenzo[d]pyrrolo[3,2-b]pyrylium perchlorate by nucleophiles is described, which regardless of the nucleophile (ammoniumcarbamate, triethylamine, sodium acetate, HCI in methanol), results in 5-alkyl-7,8-dimethoxy-2-phenylfuro[2,3-c]isoquinoline. The structure of 5-methyl-7,8-dimethoxy-2-phenylfuro[2,3-c]isoquinoline was established from X-ray diffraction analysis.
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