Abstract
The valuable N-unsubstituted 4-aryl-3,5-diacyl-1,4-dihydropyridines 12b– f , bearing an electron-withdrawing substituent at the benzene ring, have been synthesized by the copper-mediated addition of functionalized arylmagnesium reagents 2b– f to N-benzhydrylpyridinium salt 9 , followed by acylation with trichloroacetic anhydride and the subsequent haloform reaction and N-deprotection.
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