1.1. 2 Types of N-Heterocyclic Carbenes
Buch
Herausgeber: Cazin, C. S. J.; Nolan, S. P.
Titel: N-Heterocyclic Carbenes in Catalytic Organic Synthesis 1
Print ISBN: 9783132012813; Online ISBN: 9783132407633; Buch-DOI: 10.1055/b-004-132254
1st edition © 2017. Thieme. All rights reserved.
Georg Thieme Verlag KG, Stuttgart
Fachgebiete: Organische Chemie;Chemische Reaktionen, Katalyse;Organometallchemie;Chemische Labormethoden, Stöchiometrie
Science of Synthesis Reference Libraries
Übergeordnete Publikation
Titel: Science of Synthesis
DOI: 10.1055/b-00000101
Reihenherausgeber: Carreira, E. M.; Decicco, C. P.; Fürstner, A.; Koch, G.; Molander, G. A.; Schaumann, E.; Shibasaki, M.; Thomas, E. J.; Trost, B. M.
Typ: Mehrbändiges Werk
Abstract
![](https://www.thieme-connect.de/media/10.1055-b-004-132254/thumbnails/a_213zoc.jpg)
This chapter discusses the different types of N-heterocyclic carbenes (NHCs) and is organized according to ring size. The terminology for describing NHCs as normal or abnormal (mesoionic) and remote or nonremote is outlined. The pertinent properties of these different NHCs are compiled, in particular the 13C NMR spectroscopic and crystallographic parameters, as well as steric and electronic effects, which provides insights into the donor properties of the various classes of NHCs.
Schlüsselwörter
N-heterocyclic carbenes - normal carbenes - abnormal carbenes - mesoionic - remote carbenes - nonremote carbenes - imidazolylidenes - triazolylidenes - pyrazolylidenes - cyclic alkyl(amino)carbenes - pyrimidylidenes - pyridylidenes- 5 Arduengo III AJ, Bock H, Chen H, Denk M, Dixon DA, Green JC, Herrmann WA, Jones NL, Wagner M, West R. J. Am. Chem. Soc. 1994; 116: 6641
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