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Topic: Organic reaction


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  Organic Gases (Volatile Organic Compounds - VOCs) | An Introduction to Indoor Air Quality | Indoor Air | Air | US EPA
Some organics can cause cancer in animals; some are suspected or known to cause cancer in humans.
The ability of organic chemicals to cause health effects varies greatly from those that are highly toxic, to those with no known health effect.
Many organic compounds are known to cause cancer in animals; some are suspected of causing, or are known to cause, cancer in humans.
www.epa.gov /iaq/voc.html   (1366 words)

  
 Organic
Organic Chemistry is the study of the compounds of carbon, their reactions and their preparation.
Organic chemistry (and all other chemistry at that) is completely described by the quantum mechanics of nuclei and electrons interacting by electrostatic forces.
This reaction is an example of one of the many named reactions in organic chemistry, which are an organic chemist's stock-in-trade.
www.du.edu /~jcalvert/phys/organic.htm   (15191 words)

  
 Organic Reaction Mechanisms
We aim to be a forum for those physical organic chemists who are applying their expertise to both traditional and new problems, and to those chemists across these diverse areas who identify a physical organic component in their approach to their sphere of research.
The Organic Reaction Mechanisms Group of the RSC and the Cardiff School of Chemistry are organising SymPOC2007 (Symposium on Physical Organic Chemistry), which will be held on April 19 & 20, 2007 in Cardiff.
The RSC Organic Reaction Mechanisms Group represents the interests of POC, and is actively trying to strengthen and encourage younger members of the community by developing a stronger network and ensure a healthy future for the subject.
physorgchem.blogspot.com   (1385 words)

  
 Feldspar Dissolution Kinetics
Organic compounds in natural waters are thought to interact at the silicate surface and accelerate mineral weathering processes.
Organic ligands are suggested to chelate and mobilize heavy metals, sorb to mineral surfaces, and enhance the dissolution and the precipitation of inorganic minerals in aqueous systems (e.g., Bennett, 1991).
Grandstaff (1986) found that some organic acids accelerate olivine dissolution and that the relative reactivity of organic compounds is related to the ability of the organic ligand to form complexes with metals.
www.geo.utexas.edu /chemhydro/dissolution_kinetics/Intro.html   (3199 words)

  
 Organic Chemistry Supplement   (Site not responding. Last check: )
Reaction Mechanisms, including nucleophilic and electrophilic substitution, addition and elimination reactions, free radical reactions, cycloaddition reactions, molecular rearrangements, photochemical reactions, oxidation and reduction reactions, and metal mediated reactions.
It is recommended that the laboratory material traditionally referred to as "Qualititative Organic Analysis" be incorporated into the second semester of the two-semester laboratory sequence associated with the majors' course in organic chemistry.
An advanced laboratory course in organic chemistry might then be devoted to modern methods of organic synthesis (e.g., multi-step syntheses) and advanced aspects of chemical separation and identification designed as an introduction to modern methods of organic chemical research.
www.acs.org /portal/a/c/s/1/acsdisplay.html?DOC=education\cpt\ts_orgchem.html   (515 words)

  
 Fenton's Reaction
The mechanism of reaction with respect to hydrogen peroxide is very complex and may change with conditions of the reaction.
This means that the reaction must be watched more closely as the heat released during the reaction has the potential to raise the temperature too high in a short period of time, causing the liquid to boil.
The reaction may appear to be continuing at a higher pH, but measuring the changes in peroxide concentration shows that the reaction being observed is actually the acidic peroxide reacting with the more basic solution.
www.geocities.com /sage_jock/Writing/fenton.html   (1176 words)

  
 Naming Organic Reactions - Reaction of Alkanes
Elimination is an chemical reaction in which a pair of atoms or groups of atoms are removed from a molecule by reacting it with an acid or a base.
For organic reactions, an alkyl halide reacts with a hydroxide ion to produce an alkene and therefore removing a hydrogen atom and a halide ion from the molecule.
Condensation is an organic reaction when two molecules combine, usually in the presence of a catalyst, with the elimination of water or some other simple molecule.
www.angelfire.com /bc2/OrgChem/ralkanes.html   (762 words)

  
 WebReactions Home Page
A major activity for synthetic chemists is to find literature precedents for a reaction query, either a particular transformation of a specified compound or a more general search for matching analogs at various levels of similarity.
However, reactions are very complex if described in terms of the full structures of reactant and product, and so only a few thousand entries can be easily searched in a reasonable time.
WebReactions introduces a new concept for the retrieval of reactions from a large database in which reactions are indexed instead by the bond changes which occur.
www.webreactions.net   (692 words)

  
 Chemistry at BU - Organic Chemistry
The organic chemistry group emphasizes the synthesis of complex natural and unnatural molecules of biological significance with an emphasis on the development of new synthetic methodologies.
The second is development of the homo Diels-Alder reaction for the preparation of biologically active terpenoids, and the third area of synthetic research is the preparation of chiral anthracenes as templates for a Diels-Alder/retro Diels-Alder sequence on polymer support of the preparation of synthetically important synthons in parallel fashion.
Fundamentals of organic reaction mechanisms; techniques used to study reaction mechanisms; reactive intermediates: carbonium ions, radicals, carbenes, nitrenes; acid/base catalysis, reactions for the carbonyl group, cycloaddition, nucleophilic displacement reactions, and redox chemistry.
www.bu.edu /chemistry/faculty/researchareas/organic.html   (1059 words)

  
 R
At least in the context of physical organic chemistry, it seems desirable to cease using the adjective "free" in the general name of this type of chemical species and molecular entity, so that the term "free radical" may in future be restricted to those radicals which do not form parts of radical pairs.
In the formalism of "transition-state theory", the reaction coordinate is that coordinate in a set of curvilinear coordinates obtained from the conventional ones for the reactants which, for each reaction step, leads smoothly from the configuration of the reactants through that of the transition state to the configuration of the products.
The elementary reaction or reaction stage (of a molecular rearrangement) in which there is both making and breaking of bonds between atoms common to a reactant and a reaction product or a reaction intermediate.
www.chem.qmul.ac.uk /iupac/gtpoc/R.html   (2950 words)

  
 Organic Chemistry Toolkit
This on-line reaction quiz accompanies the Reaction Finder, but presents the quiz questions in a slightly different form.
This absolutely beautiful introduction to organic chemistry by Bill Reusch at Michigan State University is a MUST SEE, MUST DO.
A collection of suggestions for organic chemistry students by organic chemistry students.
www.stolaf.edu /depts/chemistry/courses/toolkits/247   (897 words)

  
 Organic Chemistry books
Asymmetric synthesis is one of the most critical strategic subjects in organic chemistry, and this book describes advanced techniques and their applications to the industrial and laboratory synthesis of important chiral molecules.
A best-selling mechanistic organic chemistry text in Germany, this text's translation into English fills a long-existing need for a modern, thorough and accessible treatment of reaction mechanisms for students of organic chemistry at the advanced undergraduate and graduate level.
Abstracts synthetic reactions from the major chemistry journals of the past year and includes all reactions and methods that are new and reasonably general.
www.sigmaaldrich.com /catalog/search/TablePage/14573963   (4114 words)

  
 SparkNotes: SAT Chemistry: Organic Chemistry
Organic chemistry is the branch of chemistry that studies carbon compounds.
Functional groups are atoms or groups of atoms attached to an organic compound that impart characteristic shapes and chemical properties to the compound.
In organic chemistry, an R, like the one in the diagram below, is often used as a shorthand notation to signify the rest of the molecule.
www.sparknotes.com /testprep/books/sat2/chemistry/chapter10section1.rhtml   (875 words)

  
 mechanisms   (Site not responding. Last check: )
It is not meant to be a comprehensive coverage of organic nomenclature.
Organic Reaction Mechanisms...These interactive html tutorials are arranged with respect to type of functional group and are designed to present problems in a question-answer format.
Organic Synthesis Problems...These interactive html tutorials are designed to present problems in a question-answer format and allow you to study the concepts at your own pace.
chemistry.boisestate.edu /rbanks/organic/organicchem.html   (346 words)

  
 Organic
For a reaction to occur, the reactants must be brought together physically, and in such an orientation that the reaction may proceed, rather than repulsion.
For a reaction to occur, the reagents must be able to try out various alternatives to see which ones will lead to a reduction in free energy, so that the reaction may proceed.
This reaction is an example of one of the many named reactions in organic chemistry, which are an organic chemist's stock-in-trade.
mysite.du.edu /~jcalvert/phys/organic.htm   (15191 words)

  
 Book Review: Organic Reaction Mechanism - M. Gomez Gallego, M. A. Sierra
Organic Reaction Mechanisms shows readers how to interpret the experimental data obtained from an organic reaction, and specifically how an organic reaction mechanism can be considered or rejected based on the analysis of the experimental evidence.
The examples are arranged to elucidate key aspects of organic reaction mechanisms.
Thus, they cover a large range of reactions and are arranged according to the rising degree of difficulty.
www.organic-chemistry.org /books/reviews/3540003525.shtm   (323 words)

  
 Organic Reaction Mechanisms Group
The Organic Reaction Mechanisms Group is for those chemists interested and active in physical organic chemistry.
We define this as the study of mechanism, reactivity, structure and binding in organic systems, especially leading to the quantitative, molecular level understanding of their properties.
These shall no doubt continue to expand, and we aim to be a forum for those physical organic chemists who are applying their expertise to both traditional and new problems, and to those chemists across these diverse areas who identify a physical organic component in their approach to their sphere of research.
www.rsc.org /Membership/Networking/InterestGroups/OrganicReactionMechanisms/index.asp   (161 words)

  
 Class
Organic chemistry is taught in a two-semester sequence in CHM 251 and CHM 252.
In particular, we will expand our understanding of reaction mechanisms and begin to learn specific reactions in order to tackle multistep syntheses.
Be on the lookout for the application of most of the basic concepts that you learned last semester.
www.naz.edu:9000 /~organic/class.htm   (441 words)

  
 Animated Reaction Mechanisms
Correct drawings of reaction mechanisms are central to organic chemistry.
It is of vital importance that your drawings of organic reaction mechanisms contain curly arrows to reflect the electron flow.
A very important reaction and a good example to practise drawing reaction mechanisms is the acid catalysed hydrolysis of ketals (acetals).
users.ox.ac.uk /~mwalter/web_05/resources/animation/reaction_amination.shtml   (421 words)

  
 Course Module: Organic Reaction Mechanisms
The conditions of reaction are typically for carbocation and with migration, one common type of intermediate is the bridged phenomium ion from NGP.
Using the principles in carbocation reactions, the 1,2-rearrangement in the Bayer-Villiger intermediate will need to break bond to rearrange to an ester product or to give a carbocation at the potential benzene-C after breaking bond-a.
In the present case it is not a case of stabilization by hypeconjugation or some inductive effect, the twisting motion brings into play the size of the methyl groups.
members.tripod.com /chmgsh/organicreaction.htm   (3179 words)

  
 Organic Reaction Mechanisms
Thus Groutas has provided not a thorough treatise on organic reaction mechanisms to compete with Peter Sykes' "A Guidebook to Mechanism in Organic Chemistry", but what is best regarded as a workbook to lead students through the process of deducing organic reaction mechanisms.
I would prefer there to be greater use of the terms nucleophile and electrophile and more mention of stereochemistry and the shape of molecules, nevertheless it is a valuable source of problems with solutions, space for which in general organic textbooks is usually rather limited.
This hands-on manual allows readers to gain a better understanding of organic reaction mechanisms by solving a wide range of problems.
dbweb.liv.ac.uk /ltsnpsc/bookrevs/4org_react_mech.htm   (698 words)

  
 Organic Chemistry Websites
Organic Reaction Quizzes and Summaries -- This site has a summary of reactions for organic chemistry students.
The Organic Chemistry Student Resource Page at Colby College -- Although some of the material at this website is specifically directed towards the Colby chemistry program, there is also a wealth of material that will be useful to you.
Organic Compounds Database -- This database allows you to search for compounds by mp, bp, index of refraction, MW, formula, UV absorption, mass spectral peaks, and chemical types (carbonyl, aromatic, NH/OH, saturated or unsaturated CH).
www.ups.edu /faculty/hanson/chemwebsites/organicwebsites.htm   (1268 words)

  
 orders of reaction and mechanisms
A reaction mechanism describes the one or more steps involved in the reaction in a way which makes it clear exactly how the various bonds are broken and made.
The reaction is first order with respect to the organic compound, and zero order with respect to the hydroxide ions.
The reaction this time is first order with respect to both the organic compound and the hydroxide ions.
www.chemguide.co.uk /physical/basicrates/ordermech.html   (1381 words)

  
 Reuters Covers OCA's Reaction to Organic Standards
To carry the USDA seal, livestock producers are required to meet strict conditions, including feeding animals 100 percent organic grain or allowing them to graze in ``organically handled'' pasture.
A provision within the so-called omnibus federal spending package would drop the rule when organic feed costs are more than double that of conventional feed.
Congress is expected by the end of the week to approve the long-delayed spending bill that will fund almost every area of the U.S. government exceptthe Pentagon.
www.organicconsumers.org /Organic/reuters021703.cfm   (492 words)

  
 Organic Chemistry at Penn State: Reactions   (Site not responding. Last check: )
equivalent to ozonolysis of the corresponding olefins (reaction 10)
E1 mechanism for tertiary or secondary allylic or benzylic substrates: the leaving group departs in a unimolecular rate-limiting step, generating the carbocation, which in the second step is deprotonated (with base) on the carbon adjacent to the cationc center, yielding the olefin; carbocation rearrangements may compete
E2 mechanism favored by strong bases: the base removes a proton from the carbon adjacent to one bearing the leaving group in a one-step bimolecular reaction that requires periplanar orientation of the hydrogen and the leaving group (anti-periplanar preferred)
courses.chem.psu.edu /chem38/reactions/reactions.html   (982 words)

  
 JCE Online: JCE WebWare: Web-Based Interactive Animation of Organic Reactions
One of the major obstacles in learning organic chemistry is the need for a three-dimensional perspective of the molecules and the reaction pathways that they follow.
To overcome the current limitations of viewing organic reactions, we have developed a Web-based, interactive procedure that allows for the animation of an organic reaction, presented as an interactively viewable Chime object (2), on the basis of an approximate structure of the corresponding transition state.
It can be used by teachers to demonstrate and explain the three-dimensional course of organic reactions and it is useful for students to design and investigate their own reaction examples.
www.jce.divched.org /JCEDLIB/WebWare/collection/reviewed/WW013/index.html   (697 words)

  
 Reasonable Mechanisms Textbook
The general approach of the book is to classify reactions according to their mechanisms and the reaction conditions under which they proceed, not according to the transformations they achieve.
Reactions which are not used widely or have been largely supplanted are generally not discussed, and newer reactions and reagents are often mentioned.
A working knowledge of the mechanisms of these reactions is indispensable to the practicing organic chemist, yet they are usually not discussed in organic chemistry textbooks or classes.
www.chem.uky.edu /research/grossman/textbook.html   (1007 words)

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