Abstract
This account summarizes our recent work on metal-quinoid carbene (QC) chemistry including
(a) dirhodium-catalyzed QC C(sp2)–H insertion reactions enabled by a C-centered carbene-transfer reactivity, (b) the
isolation, characterization, and dual reactivity of Ru(II) porphyrin QC complexes,
and (c) iridium(III) porphyrin-catalyzed QC C(sp3)–H insertion reaction initiated by an O-centered hydrogen-atom transfer reactivity
of metal–QC species.
1 Introduction
2 Catalytic Quinoid Carbene Insertions into C(sp2)–H Bonds Enabled by Carbene-Transfer Reactivity
3 Ruthenium(II) Porphyrin Quinoid Carbene Complexes and Dual Reactivity
4 Catalytic Quinoid Carbene Insertions into C(sp3)–H Bonds Enabled by Hydrogen-Atom-Transfer Reactivity
5 Perspective and Outlook
Key words
metal carbenes - homogeneous catalysis - C–H functionalization - arylation - quinoid
carbenes - hydrogen-atom transfer