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AFRICAN RESEARCH NEXUS

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chemistry

5-endo-dig Cyclization of O-Propargyl Mandelic Acid Amides towards 2,5-Dihydrofurans

European Journal of Organic Chemistry, Volume 2019, No. 47, Year 2019

5-endo-dig cyclization of O-propargyloxyamides, obtained through a Passerini reaction mediated by boric acid and subsequent propargylation, affords 2,5-dihydrofurans in the presence of tert-butylate. The mechanism of the reaction was studied by using DFT calculations and the results were compared with the behavior of analogous N-propargylamide derivatives.
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