Synlett 2021; 32(03): 249-257
DOI: 10.1055/s-0040-1707221
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© Georg Thieme Verlag Stuttgart · New York

Metal-Quinoid Carbene Chemistry: From Bonding to C–H Activation Catalysis

a   State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pofkulam Road, Hong Kong, P. R. of China
,
Kai Wu
a   State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pofkulam Road, Hong Kong, P. R. of China
,
Chi-Ming Che
a   State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pofkulam Road, Hong Kong, P. R. of China
b   HKU Shenzhen Institute of Research & Innovation, Shenzhen, 518053, P. R. of China   Email: cmche@hku.hk
› Author Affiliations
This work is supported by the Hong Kong Research Grants Council (HKU 17303815) and the Basic Research Program-Shenzhen Fund (JCYJ20170412140251576, JCYJ20170818141858021, and JCYJ20180508162429786).
Further Information

Publication History

Received: 15 June 2020

Accepted after revision: 04 July 2020

Publication Date:
07 August 2020 (online)


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