Abstract
abstract The reaction of chalcone epoxides with 2-naphthyl ethers can be initiated by stable triarylaminium salt.And after subsequent aerobic oxidative aromatization in one pot, a series of polysubstituted naphtho[2,1-b]furans were delivered. 2013 Elsevier Ltd. All rights reserved. Chalcone epoxides are an important class of compounds in viewof distinct structural features. They are readily prepared and theyare interesting intermediates in organic synthesis. 1 And duringour studies on the radical cation mediated transformations of chal-cone epoxides, 2 we have demonstrated that tris(4-bromophenyl)-aminium hexachloro-antimonate (TBPA + SbCl 6 ), a well knownsingle electron oxidant, could efficiently initiate the cycloadditionof chalcone epoxides with olefins to construct tetrahydrofurans, 2a the cycloaddition of chalcone epoxides with imines to construct1,3-oxazolidines, 2b the Friedel–Crafts (FC) reaction between chal-cone epoxides and heteroarenes to construct b-heteroaryl a -ke-tols, 2c
Published Version
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