A Cu(OAc)2-promoted cascade carboamination/oxidative cyclization of alkenes with α-imino esters has been explored. This transformation provides a concise approach to rapid assembly of 2-oxo-3-iminopyrrole derivatives in moderate to good yields.

A TiCl 4 -mediated intermolecular or intramolecular direct N-alkylation reaction of sulfonamides with inactive ethers as alkylating agents was successfully achieved. This method provides a novel approach towards N-alkyl sulfonamides from inactive ethers via an easy workup procedure.

An efficient BF3•Et 2 O-promoted benzylation of arenes and heteroarenes with various benzyl ether derivatives has been developed. This method provided alternative access to valuable diarylmethane in good yields under mild conditions via an easy work-up procedure.

Cu(OAc) 2-Promoted Cascade Carboamination/Oxidative Cyclization of C-Acylimines with Alkenes. -(DANG, L.; LIANG, L.; QIAN, C.; FU, M.; MA*, T.; XU, D.; JIANG, H.; ZENG, W.; J. Org. Chem. 79 (2014) 2, 769-776, http://dx.

The simple protocol affords various N‐alkylated sulfonamides.