Novel procedures for the [Pd]/[Ag]/TFA system catalyzed cascade reactions of nitrile directed remote C-H and dual C-H bond activation with insertion of nitrile were developed, which afforded variously polysubstituted fluorenones in moderate to good yields with tolerance of a wide variety of substrates.
An efficient and concise procedure for the ligand-free copper-catalyzed cascade reaction of C–O and C–N bond coupling was developed to afford various (NH)-phenanthridinones.
Efficient Copper-Catalyzed Intramolecular N-Arylation for the Synthesis of Oxindoles. -Suitable conditions A) are reported for the cyclization of amides. The N-protected substrates (IV) give the corresponding products (V), whereas N-acetylated starting materials (III) afford N-deprotected oxindoles surprisingly. -(JHAN, Y.-H.; KANG, T.-W.; HSIEH*, J.-C.; Tetrahedron Lett. 54 (2013) 9, 1155-1159, http://dx.
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