2.9 C—N Bond Formation by C—H Functionalization via Metal-Catalyzed Nitrene Insertion
Book
Editor: Yu, J.-Q.
Title: Catalytic Transformations via C-H Activation 2
Print ISBN: 9783132057210; Online ISBN: 9783132404137; Book DOI: 10.1055/b-004-129675
1st edition © 2015 Thieme. All rights reserved.
Georg Thieme Verlag KG, Stuttgart
Subjects: Organic Chemistry
Science of Synthesis Reference Libraries
Parent publication
Title: Science of Synthesis
DOI: 10.1055/b-00000101
Type: Multivolume Edition
Abstract
New routes for the formation of C—N bonds are important due to the prevalence of these bonds in complex natural products and molecules of pharmaceutical interest. Metallonitrene amination requires pre-oxidation of an amine, using precursors such as azides, N-(tosyloxy)carbamates, and iminoiodinanes. Binding of a transition-metal catalyst to the nitrene source gives the metallonitrene, which is capable of inserting into C—H bonds. Insertion may be made enantioselective in some systems by the use of a chiral metal complex. Most early examples of metallonitrene C—H amination focused on insertion into benzylic C—H bonds, but recently the substrate scope has been expanded to include aryl, vinyl, and even unactivated tertiary, secondary, and primary bonds.
Key words
amination - nitrenes - C—N bonds - enantioselectivity - rhodium catalysts - ruthenium catalysts - iridium catalysts - cobalt catalysts - iron catalysts- 1 McIntosh JA, Coelho PS, Farwell CC, Wang ZJ, Lewis JC, Brown TR, Arnold FH. Angew. Chem. Int. Ed. 2013; 52: 9309