The mechanism of our previously reported DDQ-mediated oxidative C–C bond-forming reaction is investigated. We are able to trap and characterize an iminium ion intermediate with X-ray crystallography, elemental analysis, and solid-state NMR spectroscopy; to our knowledge this is the first time this putative intermediate ion has been directly observed in such cross-dehydrogenative couplings (CDCs). The intermediate can be reacted with a range of nucleo-philes, including a malonate that is not amenable to a one-pot reaction protocol.
Conference
International Conference on Organic Synthesis (ICOS-18), International Conference on Organic Synthesis, ICOS, Organic Synthesis, 18th, Bergen, Norway, 2010-08-01–2010-08-06
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