The robinson annulation of some medium ring size 2-hydroxymethylenecyclanones |
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| Authors: | Vinod Dave JS Whitehurst |
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| Institution: | Department of Chemistry, The University, Exeter EX4 4QD UK |
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| Abstract: | The adducts formed from methyl vinyl ketone and the 2-hydromethylene derivatives of cyclooctane and cyclodecanone can be cyclised to spiroketones containing the same number of C atoms. The spiroketone from cyclooctanone possesses a single UV maximum at 227 nm; the cyclodecanone compound has a further absorption at ca 246 nm. The constitution and stereochemistry of the ketols produced from the adducts under mild cyclising conditions have been investigated. |
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