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Organocatalytic umpolung annulative dimerization of ynones for the synthesis of 5-alkylidene-2-cyclopentenones

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Abstract

A novel phosphine-catalyzed umpolung [3 + 2]-annulative dimerization of ynones was developed to furnish functionally rich 5-alkylidene-2-cyclopentenones. In this protocol, ynone acts as both C2 and C3 synthons, which undergo [3 + 2]-annulative dimerization.

Graphical abstract: Organocatalytic umpolung annulative dimerization of ynones for the synthesis of 5-alkylidene-2-cyclopentenones

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Publication details

The article was received on 28 Sep 2017, accepted on 07 Nov 2017 and first published on 07 Nov 2017


Article type: Communication
DOI: 10.1039/C7OB02424J
Citation: Org. Biomol. Chem., 2017, Advance Article
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    Organocatalytic umpolung annulative dimerization of ynones for the synthesis of 5-alkylidene-2-cyclopentenones

    D. B. Ramachary, T. Prabhakar Reddy and A. Suresh Kumar, Org. Biomol. Chem., 2017, Advance Article , DOI: 10.1039/C7OB02424J

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