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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 50, 2020 - Issue 6
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ARTICLES

Rhodium-catalysed chemo- and regio-selective [3 + 2+2] cycloadditions of bis(methylenecyclopropanes) and alkynes: Synthesis of spirocyclic 5–7 condensed cycloheptenes

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Pages 840-848 | Received 10 Oct 2019, Published online: 08 Feb 2020
 

Abstract

Rhodium-catalyzed intermolecular [3 + 2+2] cycloaddition reactions of bis(methylenecyclopropanes) with different alkynes are described. The rhodium-catalyzed [3 + 2+2] cycloadditions resulted in the formation of functionalized 5–7–3 spirocyclic carbocycles in moderate yields with excellent regio- and chemo-selectivity.

GRAPHICAL ABSTRACT

Acknowledgments

I.K. Gujral Punjab Technical University (PTU), Kapurthala is acknowledged for providing research facilities.

Additional information

Funding

The financial support from Department of Science and Technology (DST), New Delhi, and Board of Research in Nuclear Sciences (BRNS), India [Scheme No. 2013/37C/11/BRNS/198] is highly acknowledged.

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