Fragmentation and rearrangement of Breslow intermediates: branches to both radical and ionic pathways

Abstract

Radical and ionic pathways of fragmentation and the rearrangement of Breslow intermediates coexist, depending on the protonation state of the hydroxyl group.

Isolation and characterization of an annelated N-heterocyclic carbene stabilized Breslow enolate

“…1a). 22 Although several Breslow enolates have already been generated by electrolysis and characterized by UV-vis spectroscopy, [23][24][25][26][27][28] due to their inherent reactivity, the isolation and crystallographic study of these species remains challenging.…”