# Caffeyl alcohol

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**Caffeyl alcohol** is the [organic compound](/source/Organic_compound) with the formula (HO)2C6H3-4-CHCHCH2OH. This colourless solid is related to [catechol](/source/Catechol) by attachment to [allyl alcohol](/source/Allyl_alcohol). It is the precursor to one of the three principal [lignols](/source/Monolignol).

## Preparation and occurrence

In the laboratory, caffeyl alcohol can be synthesized from [3,4-dihydroxybenzaldehyde](/source/3,4-dihydroxybenzaldehyde).[1] It is an intermediate in the [biosynthesis](/source/Biosynthesis) of [coniferyl alcohol](/source/Coniferyl_alcohol), the conversion being effected by [caffeate O-methyltransferase](/source/Caffeate_O-methyltransferase).[2]

## Related compounds

Two related compounds are [caffeyl aldehyde](/source/Caffeyl_aldehyde) and [caffeic acid](/source/Caffeic_acid), the latter also being a minor component of coffee.[3]

## References

1. Karl Herrmann “Caffeyl Alcohol” Pharmazie 1953, volume 8, 303.

1. John M Humphreys, Clint Chapple “Rewriting the Lignin Roadmap” Current Opinion in Plant Biology 2002, volume 5, 224–229. [doi:10.1016/S1369-5266(02)00257-1](https://doi.org/10.1016/S1369-5266(02)00257-1)

1. Rinantonio Viani, Marino Petracco “Coffee” in Ullmann’s Encyclopedia of Industrial Chemistry” Wiley-VCH, 2007, Weinheim.

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Adapted from the Wikipedia article [Caffeyl alcohol](https://en.wikipedia.org/wiki/Caffeyl_alcohol) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Caffeyl_alcohol?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.