Propenyl
In organic chemistry, 1-propenyl has the formula CH=CHCH3 and 2-propenyl has the formula CH2=C-CH3. These groups are found in many compounds. Propenyl compounds are isomeric with allyl compounds, which have the formula CH2-CH=CH2.
Image:Monolignols general.svg|thumb|200px|The three common precursors to lignin are derivatives of propenylbenzene: paracoumaryl alcohol, coniferyl alcohol and sinapyl alcohol.
Chemicals with 1-propenyl groups
Many phenylpropanoids and their derivatives feature derivatives of propenylbenzene:Chemicals with 2-propenyl groups
Isopropenyl acetate is a 2-propenyl ester, synthesizable from ketene.Several terpenes feature 2-propenyl substituents: