The carbonyl group, characterized by a double bond between a carbon and an oxygen atom, is the central functional unit in organic chemistry. Due to their natural polarity—where the carbon ...

A rapid intramolecular reaction with the carbonyl oxygen releases the strain in the cyclopropane ring, producing an electrophilic oxonium ion, which is in turn attacked in a Prins-type reaction by ...

forming two additional ketone (carbonyl) groups. The loss of hydrogen indicates an oxidation reaction (increasing the oxygen to hydrogen ratio) and the molecule will also lose two electrons.