Overview

1. INTRODUCTION Although quite spectacular results have been obtained in the last few decades in the field of homogeneous transition metal catalyzed transformations of olefins and alkynes [1], reactions which could lead to heterocycles have been partly neglected. An obvious reason for this is that substrates containing heteroatoms such as N, 0 or S could coordinate the metal and suppress the catalytic activity. Nevertheless, some interesting early examples of transition-metal-catalyzed syntheses of heterocyclic compounds have been reported and these have been reviewed by C. W. Bird [2] . More recently the incorporation of CO , which enables esters and lactones 2 to be synthesized from olefinic starting materials, has begun to attract attention (see, for example, ref. [3]). The dominant role of palladium as the catalyst for the formation of O-containing heterocycles has been suggested to be associated with the relatively low strength of the Pd-O bond. Among the first examples of a nitrogen-containing heterocycle to be formed by homogeneous catalysis is the triazine shown in Equation 1 which is the product of the trimerization of benzonitrile in the presence of iron penta carbonyl or Raney­ nickel [4] .

Full Product Details

Author:   R. Ugo
Publisher:   Springer
Imprint:   Kluwer Academic Publishers
Edition:   1974 ed.
Volume:   2
Weight:   0.600kg
ISBN:  

9789027705228

ISBN 10:   9027705224
Pages:   202
Publication Date:   30 November 1974
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   Out of stock  
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Table of Contents

of Volume 2.- Hydroformylation of Olefins with Carbonyl Derivates of the Noble Metals as Catalysts.- 1. Introduction.- 2. Comparison of the Activity of Group VIII Metals.- 3. Hydroformylation with Rhodium Complexes as Catalysts.- 4. Hydroformylation with Iridium Complexes as Catalysts.- 5. Hydroformylation with Ruthenium and Osmium Complexes as Catalysts.- 6. Hydroformylation with Palladium and Platinum Catalysts.- 7. Hydrogénation of Aldehydes with Carbonyl Derivatives of the Noble Metals as Catalysts.- 8. Recent Results.- 9. Conclusions.- 10. References.- Addition of hydrogen cyanide to mono-olefins catalyzed by transition metal complexes.- 1. Introduction and scope.- 2. Interaction of hydrogen cyanide with metal complexes.- 3. Hydrocyanation of non-activated olefins.- 4. The proposed mechanisms of hydrocyanation.- 5. Hydrocyanation of activated olefins.- 6. Recent results.- 7. Conclusion.- 8. References.- Nickel Catalyzed Syntheses of Methyl-Substituted Cyclic Olefins, an Example of Stepwise Carbon-Carbon Bond Formation Promoted by a Transition Metal Complex.- 1. Introduction.- 2. Cope Rearrangement of 1,5-dienes.- 3. Preparation of monomethyl derivatives by methylene insertion reaction (MIR).- 4. Preparation of dimethyl derivatives by MIR.- 5. Identification of isomers using the combination gas chromatography/mass spectrometry.- 6. Catalytic syntheses of mono and dimethyl substituted ring olefins.- 7. Mechanism of carbon-carbon bond formation promoted by low valent nickel catalysts.- 8. Some general aspects of carbon-carbon and carbon-hydrogen bond formation promoted by transition metals.- 9. References.- Dimerization of Acrylic Compounds.- 1. Introduction.- 2. Thermal and photo dimerization.- 3. Dimerization by alkali metal amalgams and direct electrolysis.- 4.Phosphine-catalyzed dimerization.- 5. Dimerization by transition metal complexes.- 6. Conclusion.- 7. References.

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