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Pd-Catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones

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Abstract

An efficient method for the construction of furanobenzodihydropyran skeletons has been developed through Pd-catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones. By using a palladium complex generated in situ from [Pd2(dba)3]·CHCl3 and phosphoramidite L3 as a catalyst under mild reaction conditions, the process afforded furanobenzodihydropyrans bearing vicinal quaternary stereocenters in high yields with good to high enantio- and diastereoselectivities.

Graphical abstract: Pd-Catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones

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Publication details

The article was received on 27 Mar 2018, accepted on 13 Apr 2018 and first published on 17 Apr 2018


Article type: Communication
DOI: 10.1039/C8CC02456A
Citation: Chem. Commun., 2018, Advance Article
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    Pd-Catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones

    I. Khan, C. Zhao and Y. J. Zhang, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C8CC02456A

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