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Spirocyclization of keto-ynesulfonamides promoted by quaternary ammonium salts

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Abstract

Spirocyclization of keto-ynesulfonamides with quaternary ammonium salts was performed to access aza-spiro compounds. Exclusive E-configured 5-exo-dig compounds were isolated from keto-ynesulfonamides substituted by an aryl- or a vinyl group, whereas 6-endo-dig compounds were favored from terminal ynesulfonamides.

Graphical abstract: Spirocyclization of keto-ynesulfonamides promoted by quaternary ammonium salts

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Publication details

The article was received on 29 Aug 2018, accepted on 13 Dec 2018 and first published on 14 Dec 2018


Article type: Research Article
DOI: 10.1039/C8QO00937F
Citation: Org. Chem. Front., 2019, Advance Article
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    Spirocyclization of keto-ynesulfonamides promoted by quaternary ammonium salts

    F. Beltran, L. Andna and L. Miesch, Org. Chem. Front., 2019, Advance Article , DOI: 10.1039/C8QO00937F

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