propenyl
In organic chemistry, 1-propenyl (or simply propenyl) has the formula CH=CHCH3 and 2-propenyl (isopropenyl) 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 (1), coniferyl alcohol (2) and sinapyl alcohol (3).]]
Chemicals with 1-propenyl groups
- 2-chloropropylene
- propenylbenzene (β-methylstyrene).{{cite journal|title=Preparation of Alkenes by Reaction of Lithium Dipropenylcuprates with Alkyl Halides: (E)-2-Undecene|first1=Gerard|last1=Linstrumelle|first2= Jeanne K.|last2=Krieger|first3=George M.|last3=Whitesides
|journal=Org. Synth.|year=1976|volume= 55|page=103|doi=10.15227/orgsyn.055.0103|url=http://www.orgsyn.org/Content/pdfs/procedures/v55p0103.pdf}}
Many phenylpropanoids and their derivatives feature derivatives of propenylbenzene:
Chemicals with 2-propenyl groups
File:P-isopropenylphenol.svg features a 2-propenyl derivative of phenol.]]
Isopropenyl acetate is a 2-propenyl ester, synthesizable from ketene.
Several terpenes feature 2-propenyl substituents: