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Extraction, structural characterisation and evaluation of hydroxycinnamate esters of orchard grass (Dactylis

Ifat Parveen1, Ana Winters, Michael D Threadgill

  • 1Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Plas Gogerddan, Aberystwyth, Wales SY23 3EB, UK. ifp@aber.ac.uk

Phytochemistry
|October 22, 2008
PubMed

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Oxidation of Phenols to Quinones

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o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
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Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.
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