PYRANOCHROMENES, THIOPYRANOCHROMENILIUM SALTS. PERSPECTIVES OF SYNTHESIS

The reactions of
propanonilchromenes with protonic and aprotonic acids were investigated. The
possibility of aromatisation of thiopyranochromen-2-ones’ 4Н-thiopiranic fragment was
demonstrated using NMR 1
Н spectroscopy method in time and new chromenothiopyrilium perchlorates
(thriftoracetates) were discovered.

Key words: propanonilchromenes, (thio)pyranochromenones,
chromenothiopyrilium salt, heterocycli-zation, aromatization

2016, Т. 59, № 4, Стр. 3-7

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