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Author: Steven P. Nolan Publisher: John Wiley & Sons ISBN: 9783527314003 Category : Science Languages : en Pages : 330
Book Description
This first handbook to focus solely on the application of N-heterocyclic carbenes in synthesis covers metathesis, organocatalysis, oxidation and asymmetric reactions, along with experimental procedures. Written by leading international experts this is a valuable and practical source for every organic chemist.
Author: Steven P. Nolan Publisher: John Wiley & Sons ISBN: 9783527314003 Category : Science Languages : en Pages : 330
Book Description
This first handbook to focus solely on the application of N-heterocyclic carbenes in synthesis covers metathesis, organocatalysis, oxidation and asymmetric reactions, along with experimental procedures. Written by leading international experts this is a valuable and practical source for every organic chemist.
Author: Semih Durmus Publisher: ISBN: Category : Anti-infective agents Languages : en Pages : 193
Book Description
"The introduction of N-heterocyclic carbenes (NHCs) to organometallic and inorganic chemistry was achieved by the synthesis and isolation of chromium and mercury NHC complexes by Öfele and Wanzlick in 1968. The synthesis and characterization of numerous carbene metal complexes by Lappert et al were a significant contribution to this area of chemistry. NHCs have become an important area of research after the isolation of the first stable carbene by Arduengo in 1991. In chapter 1, the synthesis and biological activities of NHCs and their silver(I) and gold(I) derivatives are discussed. In chapter 2, the synthesis and characterization of an imidazolium-linked cyclophane is discussed as well as its potential use as a medicinal agent. In chapter 3, the synthesis and characterization of a silver(I) NHC complex is reported. The antimicrobial activity of the silver(I) NHC complex is also reported against clinically important bacteria. In chapter 4, the synthesis of a variety of silver(I) NHC complexes and their carbene transfer reactions to gold(I) reagents are reported. The gold(I) NHC complexes are also investigated for their anticancer properties. In chapter 5, the use of urocanic acid as NHC precursor is reported. The synthesis and characterization of the first silver(I) NHC complex derived from biological molecule urocanic acid is discussed as well as its antimicrobial activity."--Abstract.
Author: Olaf Kühl Publisher: John Wiley & Sons ISBN: 0470685840 Category : Science Languages : en Pages : 364
Book Description
N-heterocyclic carbenes (NHCs) have found increasing use as reagents for a range of organic transformations and in asymmetric organocatalysis. The performance of these molecules can be improved and tuned by functionalisation. Functionalised carbenes can anchor free carbenes to the metal site, introduce hemilability, provide a means to immobilise transition metal carbene catalysts, introduce chirality, provide a chelate ligand or bridge two metal centres. NHC can be attached to carbohydrates and campher, derived from amino acids and purines, they can be used as organocatalysts mimicking vitamin B1 or as weak “solvent” donors in lanthanide chemistry. Functionalised N-Heterocyclic Carbene Complexes describes major trends in functionalised NHC ligands, aiming to assist readers in their attempts to develop and apply their own functionalised carbenes. After an introduction to the chemistry and behaviour of NHC, the book gives a detailed description of functionalised carbenes and their complexes according to a range of functional groups, each with a discussion of the synthetic route, structure, stability and performance. Functionalised N-Heterocyclic Carbene Complexes is an essential guide to fine-tuning this important class of compounds for practitioners, researchers and advanced students working in synthetic organometallic and organic chemistry and catalysis.
Author: Silvia Diez-Gonzalez Publisher: Royal Society of Chemistry ISBN: 1782626816 Category : Science Languages : en Pages : 637
Book Description
In less than 20 years N-heterocyclic carbenes (NHCs) have become well-established ancillary ligands for the preparation of transition metal-based catalysts. This is mainly due to the fact that NHCs tend to bind strongly to metal centres, avoiding the need of excess ligand in catalytic reactions. Also, NHC‒metal complexes are often insensitive to air and moisture, and have proven remarkably resistant to oxidation. This book showcases the wide variety of applications of NHCs in different chemistry fields beyond being simple phosphine mimics. This second edition has been updated throughout, and now includes a new chapter on NHC‒main group element complexes. It covers the synthesis of NHC ligands and their corresponding metal complexes, as well as their bonding and stereoelectronic properties and applications in catalysis. This is complemented by related topics such as organocatalysis and biologically active complexes. Written for organic and inorganic chemists, this book is ideal for postgraduates, researchers and industrialists.
Author: Taotao Zou Publisher: Springer ISBN: 9811006571 Category : Science Languages : en Pages : 175
Book Description
This thesis focuses on the development of gold- and non-classical platinum-based anti-cancer agents that display distinctively different anti-cancer mechanisms compared to the commonly used cisplatin. These metal complexes contain N-heterocyclic carbene (NHC) ligands which are able to form strong M-C(NHC) bonds, conferring high stability and favorable lipophilicity, reactivity and binding specificity of metal complexes on biomolecules. The author demonstrates significant advances made in anti-cancer gold(III), gold(I) and platinum(II) complexes. Detailed chemical synthesis, in vitro and/or in vivo anti-cancer activities are clearly presented including: (i) a class of Au(III) complexes containing a highly fluorescent N^N^N ligand and NHC ligand that simultaneously act as fluorescent thiol “switch-on” probes and anti-cancer agents; (ii) a dinuclear gold(I) complex with a mixed diphosphine and bis(NHC) ligand displaying favorable stability and showing significant inhibition of tumor growth in two independent mice models with no observable side effects; and (iii) a panel of stable luminescent cyclometalated platinum(II) complexes exhibiting high specificity to localize to the endoplasmic reticulum (ER) domain, inducing ER stress and cell apoptosis. These works highlight the clinical potential that gold and platinum complexes offer for cancer treatment.
Author: Steven P. Nolan Publisher: Wiley-VCH ISBN: 9783527334902 Category : Science Languages : en Pages : 0
Book Description
This comprehensive reference and handbook covers in depth all major aspects of the use of N-heterocyclic carbene-complexes in organic synthesis: from the theoretical background to characterization, and from cross-coupling reactions to olefin metathesis. Edited by a leader and experienced scientist in the field of homogeneous catalysis and use of NHCs, this is an essential tool for every academic and industrial synthetic chemist.
Author: Han Vinh Huynh Publisher: John Wiley & Sons ISBN: 1118593774 Category : Science Languages : en Pages : 334
Book Description
The Organometallic Chemistry of N-heterocyclic Carbenes describes various aspects of N-heterocyclic Carbenes (NHCs) and their transition metal complexes at an entry level suitable for advanced undergraduate students and above. The book starts with a historical overview on the quest for carbenes and their complexes. Subsequently, unique properties, reactivities and nomenclature of the four classical NHCs derived from imidazoline, imidazole, benzimidazole and 1,2,4-triazole are elaborated. General and historically relevant synthetic aspects for NHCs, their precursors and complexes are then explained. The book continues with coverage on the preparation and characteristics of selected NHC complexes containing the most common metals in this area, i.e. Ni, Pd, Pt, Ag, Cu, Au, Ru, Rh and Ir. The book concludes with an overview and outlook on the development of various non-classical NHCs beyond the four classical types. Topics covered include: Stabilization, dimerization and decomposition of NHCs Stereoelectronic properties of NHCs and their evaluation Diversity of NHCs Isomers of NHC complexes and their identification NMR spectroscopic signatures of NHC complexes normal, abnormal and mesoionic NHCs The Organometallic Chemistry of N-heterocyclic Carbenes is an essential resource for all students and researchers interested in this increasingly important and popular field of research.
Author: Li-Xin Dai Publisher: John Wiley & Sons ISBN: 3527322809 Category : Science Languages : en Pages : 433
Book Description
This book meets the long-felt need for a reference on ferrocenes with the focus on catalysis. It provides a thorough overview of the synthesis and characterization of different types of chiral ferrocene ligands, their application to various catalytic asymmetric reactions, and versatile chiral materials as well as drug intermediates synthesized from them. Written by the "who's who" of ferrocene catalysis, this is a guide to the design of new ferrocene ligands and synthesis of chiral synthetic intermediates, and will thus be useful for organic, catalytic and synthetic chemists working in academia, industrial research or process development.
Author: Steven P. Nolan Publisher: John Wiley & Sons ISBN: 3527671242 Category : Science Languages : en Pages : 690
Book Description
This comprehensive reference and handbook covers in depth all major aspects of the use of N-heterocyclic carbene-complexes in organic synthesis: from the theoretical background to characterization, and from cross-coupling reactions to olefin metathesis. Edited by a leader and experienced scientist in the field of homogeneous catalysis and use of NHCs, this is an essential tool for every academic and industrial synthetic chemist.
Author: Steven P. Nolan
Author: Steven P. Nolan
Author: Semih Durmus
Author: Olaf Kühl
Author: Silvia Diez-Gonzalez
Author: Taotao Zou
Author: Caroline Magdalene Zinser
Author: Steven P. Nolan
Author: Han Vinh Huynh
Author: Li-Xin Dai
Author: Steven P. Nolan