Poly(styryl)bipyridine: synthesis and formation of transition-metal complexes and some of their physical, chemical, and catalytic properties
TL;DR: Poly(styryl)bipyridine, 1, is produced from the reaction of lithiated polystyrene with bipyridine in tetrahydrofuran as discussed by the authors.
Abstract: Poly(styryl)bipyridine, 1, is produced from the reaction of lithiated polystyrene with bipyridine in tetrahydrofuran. Under our conditions, bipyridine becomes bound to 1615% of the phenyl residues. The reaction of 1 with a variety of transition-metal salts can be carried out in a variety of swelling solvents and results in formation of polymer-bound bipyridine transition-metal complexes. The extent of metal incorporation depends on solvent, metal ion concentration, and the identity of the metal species. Zerovalent metal complexes such as@-Ph-bpy-M(CO), (M = Cr, Mo, W) are readily prepared from the reaction of 1 with the metal hexacarbonyl complexes. (Poly(styry1)bipyridyl)palladium acetate is an active catalyst for the hydrogenation of olefins at ambient pressure and temperature. It can also be used to catalyze the acetoxylation of benzene; however, the percent conversion in this case is rather low.
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TL;DR: A review of solid-phase organic synthesis can be found in this article, where the authors discuss the use of reagents and scavenging reagents in the context of solid phase organic synthesis (SPOS).
Abstract: 1 Review 1.1 Overview 1.2 Solid-phase organic synthesis (SPOS) 1.3 Beyond conventional solid-phase organic synthesis 1.4 The review 1.5 Some definitions 1.6 Solid-supported reagents and scavengers 1.7 Multi-step use of solid-supported reagents and scavenging reagents 1.8 Conclusions and future perspective 2 Introduction to the tables 2.1 Organisation of tables (reagent and catalyst section) 2.2 Representative data entry (reagent and catalyst section) 2.3 Organisation of tables (scavenging agents section) 2.4 Representative data entry (scavenging agents section) 3 Tables of reagents and catalysts 4 Tables of scavengers 5 Other relevant reviews 5.1 Insoluble polymers 5.1.1 Structure and physical properties (insoluble polymers) 5.1.2 General (insoluble polymers) 5.1.3 Reactions (insoluble polymers) 5.1.4 Miscellaneous (insoluble polymers) 5.2 Soluble polymers 5.2.1 General (soluble polymers) 5.2.2 Reactions (soluble polymers) 5.3 Inorganic solids 5.3.1 Structure and physical properties (inorganic solids) 5.3.2 General (inorganic solids) 5.3.3 Reactions (inorganic solids) 5.3.4 Miscellaneous (inorganic solids) 5.4 Miscellaneous supports 5.4.1 Structure and physical properties (miscellaneous supports) 5.4.2 General (miscellaneous supports) 5.4.3 Reactions (miscellaneous supports) 5.4.4 Miscellaneous (miscellaneous supports) 5.5 Purification strategies 5.5.1 Various supports (purification strategies) 5.5.2 Insoluble polymers (purification strategies) 6 Acknowledgements 7 Abbreviations 8 References 1 Review
623 citations
TL;DR: Pd/Si-K10 and Pd/MCM-41 were obtained by exchange in organic media of mesoporous Si modified K10 clay and Na-Al MCM41 and the efficiency of these catalysts was reported in the hydrogenation in the liquid phase of olefins, acetylenes and semi-hydrogenation of acetylene as discussed by the authors.
Abstract: Pd/Si-K10 and Pd/MCM-41 were prepared by exchange in organic media of mesoporous Si modified K10 clay and Na-Al-MCM-41 and the efficiency of these catalysts versus microporous Pd/Y-zeolite is reported in the hydrogenation in the liquid phase of olefins, acetylenes and semi-hydrogenation of acetylenes.
61 citations
TL;DR: In this paper, selective hydrogenation with the known montmorillonite-supported bipyridinepalladium(II) acetate complex, an extremely useful catalyst, is described.
Abstract: Selective hydrogenation was accomplished with the known montmorillonite-supported bipyridinepalladium(II) acetate complex, an extremely useful catalyst. The efficiency of this catalyst system is demonstrated by the reactions shown below.
60 citations
TL;DR: Inverse electron demand Diels-Alder reactions performed on the double bonds in open cellular macroporous poly(dicyclopentadiene) monoliths yield a high degree of functionalisation with grafted di( pyridyl)pyridazines in a single step.
46 citations
TL;DR: In this paper, a series of polyamides and polyesters derived from 2,2,bipyridine-5,5‘-dicarboxylic acid have been synthesized.
Abstract: Two series of polyamides and polyesters derived from 2,2‘-bipyridine-5,5‘-dicarboxylic acid have been synthesized. Different types of aliphatic and aromatic diamine and diol monomers with different structure were polymerized with the diacid or diacid chloride by using different polymerization methods. Most of these polymers exhibited modest thermal stabilities with decomposition temperatures in the range 320−500 °C, depending on the structure of the polymer main chain. It was found that some polyamides with a rigid main chain formed a lyotropic mesophase when dissolved in concentrated sulfuric acid or HMPA−4% LiCl solvent systems. For those polyamides and polyesters with a more flexible main chain, a thermotropic liquid crystal phase was observed. If a long and flexible pendant chain was attached to the polyesters, side chain melting was observed before the onset of the crystalline−nematic transition. The 2,2‘-bipyridyl moieties were able to form a complex with ruthenium. These polymer−ruthenium complexes...
45 citations
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01 Jan 1999
TL;DR: Cotton and Wilkinson's Advanced Inorganic Chemistry (AIC) as discussed by the authors is one of the most widely used inorganic chemistry books and has been used for more than a quarter century.
Abstract: For more than a quarter century, Cotton and Wilkinson's Advanced Inorganic Chemistry has been the source that students and professional chemists have turned to for the background needed to understand current research literature in inorganic chemistry and aspects of organometallic chemistry. Like its predecessors, this updated Sixth Edition is organized around the periodic table of elements and provides a systematic treatment of the chemistry of all chemical elements and their compounds. It incorporates important recent developments with an emphasis on advances in the interpretation of structure, bonding, and reactivity.From the reviews of the Fifth Edition:* "The first place to go when seeking general information about the chemistry of a particular element, especially when up-to-date, authoritative information is desired." -Journal of the American Chemical Society.* "Every student with a serious interest in inorganic chemistry should have [this book]." -Journal of Chemical Education.* "A mine of information . . . an invaluable guide." -Nature.* "The standard by which all other inorganic chemistry books are judged."-Nouveau Journal de Chimie.* "A masterly overview of the chemistry of the elements."-The Times of London Higher Education Supplement.* "A bonanza of information on important results and developments which could otherwise easily be overlooked in the general deluge of publications." -Angewandte Chemie.
12,231 citations
Book•
01 Jan 1975
TL;DR: In this article, the authors describe the process of solid phase synthesis and its applications in polypeptide synthesis and immobilized enzymes and catalysts, and describe its application in polyprotein synthesis.
Abstract: Describes the process of solid phase synthesis and its applications in polypeptide synthesis and immobilized enzymes and catalysts.
23 citations