Synthesis of Well‐Defined High‐Valent Palladium Complexes by Oxidation of Their Palladium(II) Precursors

The last decade has witnessed the rapid development of high‐valent Pd‐involved organic transformations. This has also led to a steadily growing number of publications concerning the preparation of isolable and characterizable palladium(III) and palladium(IV) complexes. A variety of one‐electron and...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry : a European journal 2020-08, Vol.26 (43), p.9430-9444
Main Authors: Zhang, Bo, Yan, Xuechao, Guo, Shuai
Format: Article
Language:English
Subjects:
Aromatic compounds
Catalysis
Chemistry
electrooxidation
Fluorination
Halides
Halogens
high-valent
Iodine
Oxidants
Oxidation
oxidation states
Oxidizing agents
Palladium
Peroxides
Precursors
Reagents
Salts
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The last decade has witnessed the rapid development of high‐valent Pd‐involved organic transformations. This has also led to a steadily growing number of publications concerning the preparation of isolable and characterizable palladium(III) and palladium(IV) complexes. A variety of one‐electron and two‐electron oxidants have been employed to give access to high‐oxidation‐state Pd compounds. Undoubtedly, the study of these stoichiometric reactions has great implications for relevant Pd‐mediated catalysis. In this minireview, the focus is on the synthetic approaches to structurally determined PdIII/IV complexes starting from their PdII precursors, and the advances in this research area from early 2010 to late 2019 will be highlighted. Chemical oxidations exploiting various oxidizing agents including 1) hypervalent iodine reagents; 2) halogens; 3) electrophilic fluorination reagents; 4) alkyl/aryl halides; 5) ferrocenium salts; 6) peroxides/O2; 7) sulfonyl chlorides; and 8) others are covered. A “greener” electrooxidation manner has also been reviewed. High‐valent Pd: The advances in the synthesis of well‐defined PdIII/PdIV complexes by chemical or electrooxidation of the PdII precursors have been summarized. These oxidation reactions of Pd model systems are believed to have great implications for high‐valent Pd‐mediated catalysis.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.202001074