Question

Themaximum number of carbon atoms which a ketone may contain is

Answer 1

Three. A ketone is a carbonyl compound, meaning there is a carbon oxygen double bond. A ketone is different from an aldehyde as an aldehyde has this C=O at the end of the molecule, while a ketone is on the inside. Thus, there must be a non-terminal carbon for there to be a ketone, and so three carbons are required (minimum), with the C=O at carbon 2. 

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Answer 2

the bayer villiger oxidation is the oxidative cleavage of a carbon carbon bond adjacent to a carbonyl which converts ketones to esters and cyclic ketones to lectons.