Palladium in Heterocyclic Chemistry
A Guide for the Synthetic Chemist
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Palladium chemistry, despite its immaturity, has rapidly become an indispensable tool for synthetic organic chemists. Heterocycles are of paramount importance in the pharmaceutical industry and palladium chemistry is one of the most novel and efficient ways of making heterocycles. Today, palladium-catalyzed coupling is the method of choice for the synthesis of a wide range of biaryls and heterobiaryls. The number of applications of palladium chemistry to the syntheses of heterocycles has grown exponentially. These developments highlight the need for a monograph dedicated solely to the palladium chemistry in heterocycles and this book provides a comprehensive explanation of the subject. The principal aim of Palladium in Heterocyclic Chemistry is to highlight important palladium-mediated reactions of heterocycles with emphasis on the unique characteristics of individual heterocycles. 1. Palladium chemistry of heterocycles has its "idiosyncrasies" stemming from their different structural properties from the corresponding carbocyclic aryl compounds. Even activated chloroheterocycles are sufficiently reactive to undergo Pd-catalyzed reactions. As a consequence of &agr and &bgr activation of heteroaryl halides, Pd-catalyzed chemistry may take place regioselectively at the activated positions, a phenomenon rarely seen in carbocyclic aryl halides. In addition, another salient peculiarity in palladium chemistry of heterocycles is the so-called "heteroaryl Heck reaction". For instance, while intermolecular palladium-catalyzed arylations of carbocyclic arenes are rare, palladium-catalyzed arylations of azoles and many other heterocycles readily take place. Therefore, the principal aim of this book is to highlight important palladium-mediated reactions of heterocycles with emphasis on the unique characteristics of individual heterocycles. 2. A myriad of heterocycles are biologically active and therefore of paramount importance to medicinal and agricultural chemists. Many heterocycle-containing natural products (they are highlighted in boxes throughout the text) have elicited great interest from both academic and industrial research groups. Recognizing the similarities between the palladium chemistry of arenes and heteroarenes, a critical survey of the accomplishments in heterocyclic chemistry will keep readers abreast of such a fast-growing field. We also hope this book will spur more interest and inspire ideas in such an extremely useful area. This book comprises a compilation of important preparations of heteroaryl halides, boranes and stannanes for each heterocycle. The large body of data regarding palladium-mediated polymerization of heterocycles in material chemistry is not focused here; neither is coordination chemistry involving palladium and heterocycles. Many heterocycle-containing natural products (highlighted throughout the text) have elicited great interest from both academic and industrial research groups. Recognizing the similarities between the palladium chemistry of arenes and heteroarenes, a critical survey of the accomplishments in heterocyclic chemistry keeps readers abreast of this fast-growing field. It is also hoped that this book will stimulate more interest and inspire new ideas in this exciting field.
Key Features
- Contains the most up-to-date developments in this fast-moving field
- Includes 3 new chapters
- Contains material from selected well-respected authors on heterocyclic chemistry
Readership
Medicinal Chemists, Organic Chemists
Table of Contents
Chapter 1: An introduction to palladium catalysis
- 1.1 Oxidative coupling/cyclization
- 1.2 Cross-coupling reactions with organometallic reagents
- 1.3 The Sonogashira reaction
- 1.4 The Heck, intramolecular Heck, and heteroaryl Heck reactions
- 1.5 Carbonylation reactions
- 1.6 The Pd-catalyzed C–P bond formation
- 1.7 Palladium-catalyzed C–N bond and C–O bond-forming reactions
- 1.8 The Tsuji–Trost reaction
- 1.9 The Wacker-type reactions
- 1.10 Mori–Ban, Hegedus, and Larock indole syntheses
Chapter 2: Pyrroles
- 2.1 Synthesis of pyrrolyl halides
- 2.2 Oxidative coupling/cyclization
- 2.3 Coupling reactions with organometallic reagents
- 2.4 Sonogashira reaction
- 2.5 Heck and intramolecular Heck reactions
- 2.6 Carbonylation
- 2.7 C-N bond formation reactions
- 2.8 Miscellaneous
Chapter 3: Indoles
- 3.1 Synthesis of indolyl halides
- 3.2 Oxidative coupling/cyclization
- 3.3 Coupling reactions with organometallic reagents
- 3.4 The Sonogashira coupling
- 3.5 Heck couplings
- 3.6 Carbonylation
- 3.7 C–N bond formation reactions
- 3.8 Miscellaneous
Chapter 4: Pyridines
- 4.1 Synthesis of halopyridines
- 4.2 Coupling reactions with organometallic reagents
- 4.3 Sonogashira reaction
- 4.4 Heck and intramolecular Heck reactions
- 4.5 Buchwald–Hartwig aminations(C–N bond formation)
- 4.6 Direct C–C bond formation
- 4.7 Summary
Chapter 5: Thiophenes and benzo[b]thiophenes
- 5.1 Preparation of halothiophenes and halobenzothiophenes
- 5.2 Oxidative and reductive coupling reactions
- 5.3 Cross-coupling with organometallic reagents
- 5.4 Sonogashira reaction
- 5.5 Heck and intramolecular Heck reactions
- 5.6 Carbonylation reactions
- 5.7 Buchwald–Hartwig aminations
- 5.8 Miscellaneous
Chapter 6: Furans and benzo[b]furans
- 6.1 Synthesis of halofurans and halobenzo[b]furans
- 6.2 Oxidative coupling/cyclization
- 6.3 Coupling reactions with organometallic reagents
- 6.4 Sonogashira reaction
- 6.5 Heck, intramolecular Heck, and heteroaryl Heck reactions
- 6.6 Heteroannulation
- 6.7 Carbonylation and C—N and C—O bond formation
Chapter 7: Thiazoles and benzothiazoles
- 7.1 Synthesis of halothiazoles
- 7.2 Coupling reactions with organometallic reagents
- 7.3 Sonogashira reaction
- 7.4 Heck and heteroaryl Heck reactions
- 7.5 Carbonylation
- 7.6 C–N bond formation
- 7.7 Site selective coupling reactions
Chapter 8: Oxazoles and benzoxazoles
- 8.1 Introduction
- 8.2 Synthesis of halooxazoles and halobenzoxazoles
- 8.3 Coupling reactions with organometallic reagents
- 8.4 Heck and heteroaryl Heck reactions
- 8.5 Carbonylation
- 8.6 Palladium-catalyzed amination
- 8.7 Carbopalladation of nitriles
- 8.8 Quaterfuran and Quinquifuran
- 8.9 Summary
Chapter 9: Imidazoles
- 9.1 Synthesis of haloimidazoles
- 9.2 Homocoupling reaction
- 9.3 Coupling reactions with organometallic reagents
- 9.4 Sonogashira reaction
- 9.5 Heck and heteroaryl Heck reactions
- 9.6 Tsuji-Trost reaction
- 9.7 Phosphonylation
Chapter 10: Pyrazines and quinoxalines
- 10.1 Pyrazines
- 10.2 Coupling reactions with organometallic reagents
- 10.3 Palladium-catalyzed amination
- 10.4 Heck reaction
- 10.5 Carbonylation reactions
- 10.6 Cyanation of pyrazines
- 10.7 Deoxygenation of heteroamine-N-oxide
- 10.8 Quinoxalines
Chapter 11: Pyrimidines
- 11.1 Synthesis of pyrimidinyl halides and triflates
- 11.2 Coupling reactions with organometallic reagents
- 11.3 Sonogashira reaction
- 11.4 Heck reaction
- 11.5 The carbonylation reaction
- 11.6 Heteroannulation
Chapter 12: Quinolines
- 12.1 Synthesis of quinoline electrophiles
- 12.2 Synthesis of quinoline nucleophiles
- 12.3 Cross-coupling reactions with organometallic reagents
- 12.4 Sonogashira reaction
- 12.5 Heck reaction
- 12.6 Miscellaneous reactions mediated by palladium
Chapter 13: Pyridazines
- 13.1 Synthesis of (pseudo)halopyridazines and (pseudo)halopyridazin-3(2H)-ones
- 13.2 Coupling reactions with organometallic reagents
- 13.3 Sonogashira reaction
- 13.4 Heck and intramolecular Heck reactions
- 13.5 Carbonylation reactions
- 13.6 C–N bond formation
Chapter 14: Industrial scale palladium chemistry
- 14.1 Introduction
- 14.2 Pharmaceutical products
- 14.3 Cosmaceuticals
- 14.4 Agrochemical products
- 14.5 Material sciences
- 14.6 Polymer chemistry
- 14.7 New catalyst developments in fine chemical synthesis
- 14.8 Amination
- 14.9 Carbonylation
- 14.10 Amidocarbonylation
Product details
- No. of pages: 658
- Language: English
- Copyright: © Elsevier Science 2006
- Published: October 30, 2006
- Imprint: Elsevier Science
- eBook ISBN: 9780080914411
About the Editors
Jie Jack Li
Affiliations and Expertise
Pfizer Global Research and Development, Ann Arbor, Michigan, USA
Gordon Gribble
Gordon Gribble is the Dartmouth Professor of Chemistry at Dartmouth College, Hanover, USA. His research program covers several areas of organic chemistry, most of which involve synthesis, including novel indole chemistry, triterpenoid synthesis, DNA intercalation, and new synthetic methodology. Prof Gribble also has a deep interest in naturally occurring organohalogen compounds, and in the chemistry of wine and wine making.
Affiliations and Expertise
Dartmouth Professor, Chemistry, Dartmouth College, Hanover, USA
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