Quinizarin boroacetate and 1,4-diaminoanthraquinone diboroacetate as dienophiles
- 1 January 1977
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 21,p. 745-746
- https://doi.org/10.1039/c39770000745
Abstract
Quinizarin boroacetate undergoes a Diels-Alder reaction with cyclopentadiene to give (after hydrolysis) a mixture of exo- and endo-leuco isomers (III) in the ratio 1 : 2·6 which can be oxidised to a bridged 2,3-cycloquinizarin derivative (IV; XOH); cycloaddition with acyclic dienes is accompanied by aromatisation.Keywords
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