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Facile access to benzofuran-fused tetrahydropyridines via catalytic asymmetric [4 + 2] cycloaddition of aurone-derived 1-azadienes with 3-vinylindoles†
Guang-Jian Mei
Organic Chemistry Frontiers Pub Date : 01/05/2021 00:00:00 , DOI:10.1039/D0QO01236J
Abstract

A highly enantioselective [4 + 2] cycloaddition reaction of aurone-derived 1-azadienes with 3-vinylindoles has been developed. In the presence of chiral phosphoric acids, a wide range of benzofuran-fused tetrahydropyridines with three contiguous stereogenic centers were obtained in good yields, and with excellent diastereo- and enantio-selectivities.

Graphical abstract: Facile access to benzofuran-fused tetrahydropyridines via catalytic asymmetric [4 + 2] cycloaddition of aurone-derived 1-azadienes with 3-vinylindoles
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