Organic Transition
Author : Gigi DiGiacomo
Publisher :
Page : 178 pages
File Size : 16,7 MB
Release : 2015-09-01
Category :
ISBN : 9781888626155
Author : Gigi DiGiacomo
Publisher :
Page : 178 pages
File Size : 16,7 MB
Release : 2015-09-01
Category :
ISBN : 9781888626155
Author : Louis S. Hegedus
Publisher : University Science Books
Page : 358 pages
File Size : 32,11 MB
Release : 1999
Category : Science
ISBN : 9781891389047
This second edition offers easy access to the field of organotransition metal chemistry. The book covers the basics of transition metal chemistry, giving a practical introduction to organotransition reaction mechanisms.
Author : Charles L. Mohler
Publisher : Natural Resource Agriculture and Engineering Service (Nraes)
Page : 156 pages
File Size : 39,15 MB
Release : 2009
Category : Crop rotation
ISBN : 9781933395210
Author :
Publisher :
Page : 20 pages
File Size : 39,60 MB
Release : 2010
Category : Agriculture and state
ISBN :
Author : Roderick Bates
Publisher : John Wiley & Sons
Page : 5 pages
File Size : 37,20 MB
Release : 2012-04-30
Category : Science
ISBN : 1119978939
Transition metals open up new opportunities for synthesis, because their means of bonding and their reaction mechanisms differ from those of the elements of the s and p blocks. In the last two decades the subject has mushroomed - established reactions are seeing both technical improvements and increasing numbers of applications, and new reactions are being developed. The practicality of the subject is demonstrated by the large number of publications coming from the process development laboratories of pharmaceutical companies, and its importance is underlined by the fact that three Nobel prizes have been awarded for discoveries in this field in the 21st Century already. Organic Synthesis Using Transition Metals, 2nd Edition considers the ways in which transition metals, as catalysts and reagents, can be used in organic synthesis, both for pharmaceutical compounds and for natural products. It concentrates on the bond-forming reactions that set transition metal chemistry apart from "classical" organic chemistry. Each chapter is extensively referenced and provides a convenient point of entry to the research literature. Topics covered include: introduction to transition metals in organic synthesis coupling reactions C-H activation carbonylative coupling reactions alkene and alkyne insertion reactions electrophilic alkene and alkyne complexes reactions of alkyne complexes carbene complexes h3- or p-allyl -allyl complexes diene, dienyl and arene complexes cycloaddition and cycloisomerisation reactions For this second edition the text has been extensively revised and expanded to reflect the significant improvements and advances in the field since the first edition, as well as the large number of new transition metal-catalysed processes that have come to prominence in the last 10 years – for example the extraordinary progress in coupling reactions using “designer” ligands, catalysis using gold complexes, new opportunities arising from metathesis chemistry, and C-H activation – without neglecting the well established chemistry of metals such as palladium. Organic Synthesis Using Transition Metals, 2nd Edition will find a place on the bookshelves of advanced undergraduates and postgraduates working in organic synthesis, catalysis, medicinal chemistry and drug discovery. It is also useful for practising researchers who want to refresh and enhance their knowledge of the field.
Author : Uli Kazmaier
Publisher : Springer Science & Business Media
Page : 354 pages
File Size : 26,42 MB
Release : 2011-10-29
Category : Science
ISBN : 3642227481
Giovanni Poli, Guillaume Prestat, Frédéric Liron, Claire Kammerer-Pentier: Selectivity in Palladium Catalyzed Allylic Substitution.- Jonatan Kleimark and Per-Ola Norrby: Computational Insights into Palladium-mediated Allylic Substitution Reactions.- Ludovic Milhau, Patrick J. Guiry: Palladium-catalyzed enantioselective allylic substitution.- Wen-Bo Liu, Ji-Bao Xia, Shu-Li You: Iridium-Catalyzed Asymmetric Allylic Substitutions.- Christina Moberg: Molybdenum- and Tungsten-Catalyzed Enantioselective Allylic Substitutions.- Jean-Baptiste Langlois, Alexandre Alexakis: Copper-catalyzed enantioselective allylic substitution.- Jeanne-Marie Begouin, Johannes E. M. N. Klein, Daniel Weickmann, B. Plietker: Allylic Substitutions Catalyzed by Miscellaneous Metals.- Barry M. Trost, Matthew L. Crawley: Enantioselective Allylic Substitutions in Natural Product Synthesis.
Author : Deanna M. Lloyd
Publisher :
Page : 113 pages
File Size : 22,98 MB
Release : 2016
Category : Organic farmers
ISBN :
In the midst of double-digit growth in market demand for organic products, there is a lag in the growth of certified organic production in the United States. This thesis investigated the motivations and barriers farmers face when making the transition to organic agriculture. Three distinct organic farmer typologies were identified: Beginning Organic Farmer, Experienced Farmer Beginning Organic and Experienced Organic Farmer. Using survey research and case studies, this thesis combined quantitative and qualitative research methods to explore farmer perspectives from each typology. Experienced Farmers Beginning Organic were more motivated to transition by tangible, economic factors than Beginning and Experienced Organic Farmers who were motivated by more conceptual, ideological reasons. Obstacles to organic transition were categorized into four groups: economic, production, market and social obstacles. Farmers from each typology agreed that economic factors and some production issues were obstacles to the transition to organic agriculture. The majority of obstacles were considered externally influenced by factors off the farm including policy, market dynamics and foreign affairs. Variances in perception of obstacles between farmer typologies were highlighted. Findings improve understanding of farmer motivations and challenges to organic transition. Recommendations include differentiation of research, education and policy based on farmer typology.
Author : Jane Potter Gates
Publisher :
Page : 42 pages
File Size : 14,82 MB
Release : 1990
Category : Government publications
ISBN :
Author : Jiro Tsuji
Publisher : John Wiley & Sons
Page : 500 pages
File Size : 19,3 MB
Release : 2002-08-16
Category : Science
ISBN : 9780471560272
Im Laufe der vergangenen 35 Jahre wurden unzahlige Synthesewege entwickelt, bei denen Ubergangsmetallkomplexe entweder als Reagenzien oder als Katalysatoren fungieren. Dieses Buch bietet besonders denjenigen Synthesechemikern interessante und moderne Einblicke, die bisher noch nicht mit den vielfaltigen Moglichkeiten der Organometallchemie mit Ubergangsmetallen vertraut sind. Zu wichtigen ubergangsmetallkatalysierten Reaktionen werden Anwendungsbeispiele diskutiert. (01/00)
Author : H.M. Colquhoun
Publisher : Springer Science & Business Media
Page : 459 pages
File Size : 27,33 MB
Release : 2012-12-06
Category : Science
ISBN : 1461326516
The continually growing contribution of transition metal chemistry to synthetic organic chemistry is, of course, widely recognized. Equally well known is the difficulty in keeping up-to-date with the multifarious reactions and procedures that seem to be spawned at an ever-increasing rate. These can certainly be summarized on the basis of reviews under the headings of the individual transition metals. More useful to the bench organic chemist, however, would be the opposite type of concordance based on the structural type of the desired synthetic product. This is the approach taken in the present monograph, which presents for each structural entity a conspectus of the transition metal-mediated processes that can be employed in its production. The resulting comparative survey should be a great help in devising the optimum synthetic approach for a particular goal. It is presented from an essentially practical viewpoint, with detailed direc tions interspersed in the Houben-Weyl style. The wide scope of the volume should certainly encourage synthetic organic chemists to utilize fully the range and versatility of these transition metal-mediated processes. This will certainly be a well-thumbed reference book! R. A. RAPHAEL Cambridge University v Preface In recent years an enormous amount of work has been done on the catalysis of organic reactions by various transition metal species and on the organic reactivity of organo-transition-metal compounds.