Conception et mise au point, pour la réaction d'hydroformylation des alcènes, d'une nouvelle classe de catalyseurs dinucléaires du rhodium (I) utilisant un effet coopératif des deux centres métalliques PDF Download
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Author: Alain Thorez (auteur d'une thèse de sciences.)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 136
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Author: Alain Thorez (auteur d'une thèse de sciences.)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 136
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Author: Thierry Baig
Publisher:
ISBN:
Category :
Languages : fr
Pages : 328
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DANS LE BUT DE METTRE AU POINT UN OUTIL DE SYNTHESE SELECTIVE DES AMINES A PARTIR D'ALCENES, NOUS AVONS SUIVI UNE DOUBLE DEMARCHE. LA PREMIERE VOIE EXPLOREE A CONCERNE L'AMINATION DIRECTE DE L'ALCENE EN PRESENCE DE COMPLEXES DU PALLADIUM QUI CONDUISAIENT JUSQU'ALORS A DES REACTIONS STCHIOMETRIQUES. IL S'AVERE QUE LES COMPLEXES DU PALLADIUM COMPORTANT DES LIGANDS THIOLATO OU THYOCYANATO AU LIEU DE LIGANDS CHLORO CATALYSENT L'ADDITION D'UN ALCENE A UNE AMINE MAIS LA REACTION EST LIMITEE A DES ALCENES TRES ACTIVES. LA SECONDE APPROCHE A ETE DEVOLUE A LA REACTION D'AMINOMETHYLATION CATALYSEE PAR DES COMPLEXES DU RHODIUM QUI SONT DES PRECURSEURS CATALYTIQUES TRES ACTIFS ET SELECTIFS EN HYDROFORMYLATION DANS DES CONDITIONS OPERATOIRES DOUCES (80C; 8 BAR). AU VU DES BONNES SELECTIVITES OBTENUES ET DES PERFORMANCES DU SYSTEME CATALYTIQUE, NOUS NOUS SOMMES PREOCCUPES DU PROBLEME DE LA RECUPERATION DU COMPLEXE ORGANOMETALLIQUE. LA REACTION EN MILIEU HOMOGENE SUPPORTE EST ENVIRON DIX FOIS PLUS LENTE QUE LORSQU'ON EST EN PRESENCE DU COMPLEXE ANALOGUE EN PHASE HOMOGENE. DE LA SORTE DE NOMBREUX PHENOMENES SECONDAIRES APPARAISSENT, EN PARTICULIER LA POLYMERISATION DES ALDEHYDES ET DES ENAMINES INTERMEDIAIRES. LA SOLUTION QUE NOUS AVONS ENTREPRIS D'EXPLORER EST UN REACTEUR D'AMINOMETHYLATION DES ALCENES EN CONTINU DANS UN SYSTEME A TROIS ETAGES OU L'HYDROFORMYLATION EST EFFECTUEE EN PRESENCE D'UN COMPLEXE SUPPORTE, LA CONDENSATION DE L'ALDEHYDE ET DE L'AMINE REALISEE A BASSE TEMPERATURE ET L'HYDROGENATION DE L'ENAMINE QUI EN RESULTE OPEREE SUR UN CATALYSEUR HETEROGENE CLASSIQUE
Author: Reinaldo Enrique Hernandez Rivas
Publisher:
ISBN: 9783844087970
Category :
Languages : de
Pages : 0
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Author: M. de Pontes
Publisher: Elsevier
ISBN: 0080537324
Category : Science
Languages : en
Pages : 601
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Book Description
The Fourth International Natural Gas Conversion Symposium was attended by 180 delegates from 25 countries. Representation was evenly balanced between industry and academia. The opening address was delivered by Mr Roy Pithey, Chairman of South Africa's Central Energy Fund, who dealt with the importance and utilisation of natural gas in sub-Saharan Africa. Plenary lectures were presented by Professors E. Iglesia (Catalyst design and selectivity for F-T synthesis) and E.E. Wolf (Oxidative Coupling Methane). A number of keynote addresses were delivered:- Dr T. Fleisch (Amoco) described the use of DME as a transport fuel and the work which has been carried out in this area in collaboration with Haldor Topsoe- Professor L.D. Schmidt (Univ. of Minnesota) explained his work on the direct conversion of methane at high velocities- Dr B. Jager (SASTECH R & D) reported on the recent developments in slurry and fluidized bed F-T reactors as SASOL- Dr J. Rostrup-Nielsen (Haldor Topsoe) discussed the role of catalysis in the conversion of natural gas for power generation.Areas signalled for further research were: direct conversion of methane to intermediate monomers; methanol conversion to higher alcohols; CO/H2 conversion in a commercially viable route to higher alcohols; and CO/H2 conversion to high quality gasoline. It is obvious that such developments would fit into the energy cycle which has moved from wood, to coal, to oil, to gas, and will most probably move to hydrogen.
Author: Józef J. Ziółkowski
Publisher: World Scientific Publishing Company
ISBN:
Category : Science
Languages : en
Pages : 508
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Author: Michael B. Smith
Publisher: John Wiley & Sons
ISBN: 0470084944
Category : Science
Languages : en
Pages : 2379
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Book Description
The Sixth Edition of a classic in organic chemistry continues its tradition of excellence Now in its sixth edition, March's Advanced Organic Chemistry remains the gold standard in organic chemistry. Throughout its six editions, students and chemists from around the world have relied on it as an essential resource for planning and executing synthetic reactions. The Sixth Edition brings the text completely current with the most recent organic reactions. In addition, the references have been updated to enable readers to find the latest primary and review literature with ease. New features include: More than 25,000 references to the literature to facilitate further research Revised mechanisms, where required, that explain concepts in clear modern terms Revisions and updates to each chapter to bring them all fully up to date with the latest reactions and discoveries A revised Appendix B to facilitate correlating chapter sections with synthetic transformations
Author: George S. Zweifel
Publisher: John Wiley & Sons
ISBN: 1119086760
Category : Science
Languages : en
Pages : 416
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Book Description
This book bridges the gap between sophomore and advanced / graduate level organic chemistry courses, providing students with a necessary background to begin research in either an industry or academic environment. • Covers key concepts that include retrosynthesis, conformational analysis, and functional group transformations as well as presents the latest developments in organometallic chemistry and C–C bond formation • Uses a concise and easy-to-read style, with many illustrated examples • Updates material, examples, and references from the first edition • Adds coverage of organocatalysts and organometallic reagents
Author: Zerong Wang
Publisher: Wiley-Interscience
ISBN: 9780471704508
Category : Science
Languages : en
Pages : 3824
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Book Description
With its coverage of 701 organic name reactions and reagents, this three-volume set is the largest, most up-to-date major reference work of its kind. It offers students and professional chemists a valuable resource for conducting experiments and performing a broad range of applications, from pharmaceuticals to plastics to pesticides. Each reaction listing is clearly organized into uniform sections that allow readers to quickly gather the information they need to conduct their own experimental procedures Comprehensive Organic Name Reactions and Reagents offers several features that help readers gather information quickly and conduct their experiments successfully: Chemical abbreviations list the abbreviation, the chemical's full name, its structure, and page references Schematic reaction index offers a quick overview of each reaction Reaction summaries provide basic information about each name reaction Reaction type summaries categorize and organize all related name reactions according to the type of transformation (e.g., oxidation, reduction, synthesis of alkenes, etc.)
Author: McMurry
Publisher:
ISBN: 9781473713116
Category :
Languages : en
Pages :
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Author: Janice Gorzynski Smith
Publisher:
ISBN: 9781264238590
Category : Biochemistry
Languages : en
Pages :
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Book Description
"The goal of this text is to relate the fundamental concepts of general, organic, and biological chemistry to the world around us, and in this way illustrate how chemistry ex-plains many aspects of everyday life. This text is different-by design. Since today's students rely more heavily on visual imagery to learn than ever before, this text uses less prose and more diagrams and figures to reinforce the major themes of chemistry. A key feature is the use of molecular art to illustrate and explain common phenomena we encounter every day. Each topic is broken down into small chunks of information that are more manageable and easily learned. Students are given enough detail to understand basic concepts, such as how soap cleans away dirt and why trans fats are undesirable in the diet, without being overwhelmed. This textbook is written for students who have an interest in nursing, nutrition, envi-ronmental science, food science, and a wide variety of other health-related professions. The content of this book is designed for an introductory chemistry course with no chemistry prerequisite, and is suitable for either a two-semester sequence or a one-semester course. I have found that by introducing one new concept at a time, keeping the basic themes in focus, and breaking down complex problems into small pieces, many students in these chemistry courses acquire a new appreciation of both the human body and the larger world around them"--
