Enone

An enone, also called an α,β-unsaturated carbonyl, is a type of organic compound consisting of an alkene conjugated to a ketone. The simplest enone is methyl vinyl ketone (butenone) or CH2=CHCOCH3. An enal is the corresponding α,β-unsaturated aldehyde, an example being acrolein (CH2=CHCHO). An enone, also called an α,β-unsaturated carbonyl, is a type of organic compound consisting of an alkene conjugated to a ketone. The simplest enone is methyl vinyl ketone (butenone) or CH2=CHCOCH3. An enal is the corresponding α,β-unsaturated aldehyde, an example being acrolein (CH2=CHCHO). Enones are typically produced using an Aldol condensation or Knoevenagel condensation. Some commercially significant enones are produced by condensations of acetone, e.g. mesityl oxide and isophorone. In the Meyer–Schuster rearrangement the starting compound is a propargyl alcohol. Cyclic enones can be prepared via the Pauson–Khand reaction.