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.
The three common precursors to lignin are derivatives of propenylbenzene: paracoumaryl alcohol (1), coniferyl alcohol (2) and sinapyl alcohol (3).
Chemicals with 1-propenyl groups
- 2-chloropropylene
- propenylbenzene (β-methylstyrene).[1]
Many phenylpropanoids and their derivatives feature derivatives of propenylbenzene:
Chemicals with 2-propenyl groups
p-Isopropenylphenol features a 2-propenyl derivative of phenol.
Several terpenes feature 2-propenyl substituents:
See also
References
- ↑ Linstrumelle, Gerard; Krieger, Jeanne K.; Whitesides, George M. (1976). "Preparation of Alkenes by Reaction of Lithium Dipropenylcuprates with Alkyl Halides: (E)-2-Undecene" (PDF). Org. Synth. 55: 103. doi:10.15227/orgsyn.055.0103.
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