The changing faces of halogenated marine natural products: total synthesis of the reported structures of elatenyne and an enyne from Laurencia majuscula.
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Alkynes↗
Biomedical subjects
Helen M Sheldrake
Publications and source records attributed to Helen M Sheldrake.
Functionalized cyclobutenes via multicomponent thermal [2 + 2] cycloaddition reactions.
[reaction: see text] Enamine [2 + 2] cycloadditions can be achieved in useful yields simply by stirring a mixture of an aldehyde, diethylamine, a dialkyl fumarate, and potassium carbonate in acetonitrile at 25 degrees C, conditions that are compatible with the presence of a potential leaving group on the beta-position of the intermediate enamine. Methylation and elimination of the product cyclobutanes completes a mild nonphotochemical route to functionalized cyclobutenes.
Journal Article↗
Manganese(III) acetate mediated synthesis of oxygen heterocycles. Influence of copper(II) salts on product distribution.
Unsaturated malonates bearing pendant alcohols yield carbocycles tethered to oxygen heterocycles on exposure to manganese(iii) acetate and an appropriate copper(ii) salt.
Journal Article↗