TRANSFORMATION DU CATION ISOFLAVYLIUM EN PHENYL-3 COUMARINES, ISOFLAVENES-3 ET ISOFLAVANNES
Isoflavylium salts 1 are key starting materials for synthesis of 3-phenyl coumarins 2,isoflav-3-enes 4 and isoflavans 5, by chemical conversions narrowsly apparented to biogenetic pathways actually recognized for natural compounds of these series.