Polyacetylenes from water hemlock, Cicuta virosa

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Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation
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Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation

Published on: June 17, 2014

U Wittstock1, F Hadacek, G Wurz

  • 1Institut für Pharmazeutische Biologie der Ernst-Moritz-Arndt Universität Greifswald, Jahnstrasse 15a, D-17489 Greifswald, Germany.

Planta Medica
|October 1, 1995
PubMed

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Similar to water, alcohols can add to the carbonyl carbon of the aldehydes and ketones. The addition of one molecule of alcohol to the carbonyl compound forms the hemiacetal or half acetal. As depicted below, in a hemiacetal, the carbon is directly linked to an OH and OR group.
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The pinacol and McMurry reactions involve the reductive coupling of ketones or aldehydes. Similarly, the bimolecular reductive coupling of two ester molecules in the presence of sodium metal in an aprotic solvent yields an α-hydroxy ketone product. The α-hydroxy ketone is also called acyloin, so the reaction is referred to as ‘acyloin condensation.’
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