Bench-stable non-symmetric diarylcarbenium tetrafluoroborates have been isolated via the direct coupling of aryl (or heteroaryl) aldehydes and N-heteroarenes, and fully characterised. They have proven to be highly stable in the presence of both EDG and EWG substituents. An (E)-iminium vinylogous substructure has been shown as the common cation scaffold by X-ray analysis and by n.O.e. determination.
Synthesis of bench-stable diarylmethylium tetrafluoroborates
BARBERO, Margherita;BUSCAINO, Roberto;CADAMURO, Silvano;DUGHERA, Stefano;MARABELLO, Domenica;
2015-01-01
Abstract
Bench-stable non-symmetric diarylcarbenium tetrafluoroborates have been isolated via the direct coupling of aryl (or heteroaryl) aldehydes and N-heteroarenes, and fully characterised. They have proven to be highly stable in the presence of both EDG and EWG substituents. An (E)-iminium vinylogous substructure has been shown as the common cation scaffold by X-ray analysis and by n.O.e. determination.
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