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Wittig Georg:     more detail

Wittig Chemistry: Topics in Current Chemistry by H. J. Bestmann, 1983-07 Tu Braunschweig Faculty: Richard Dedekind, Kurt Tank, Manfred Eigen, Georg Wittig, Nikolaus Hofreiter, Henning Kagermann, Herbert Freundlich Ueber Die Termische Veranderlichkeit Des Daniellschen Elements Und Des Accumulators (INAUGURAL-DISSERTATION ZUR ERLANGUNG DER PHILOSOPHISCHEN DOCTORWURDE VORGELEGT DER HOHEN PHILOSOPHISCHEN FACULTAT DER GEORG-AUGUSTS-UNIVERSITAT ZU GOTTINGEN, GERMAN LANGUAGE, GERMANY) by GEORG MEYER, 1888 Jahrbuch der Akademie der Wissenschaften in Gottingen (fur das Jahr 1965) by Oskar Glemser, Heinrich Matthaei, et all 1966 Electromagnetische Rotationserscheinungen Flussiger Leiter (INAUGURAL-DISSERTATION ZUR ERLANGUNG DER DOKTORWURDE EINER HOHEN PHILOSOPHISCHEN FACULTAT DER GEORG-AUGUSTS-UNIVERSITAT ZU GOTTINGEN, GERMAN LANGUAGE, GERMANY) by FRIEDRICH SCHUMANN, 1887

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1. WIEM: Wittig Georg
   wittig georg (18971987), chemik niemiecki. Profesor uniwersytetów w Tybindze (1944-1956)i Heidelbergu (1956-1967). Chemia, Niemcy wittig georg (1897-1987).  
   http://wiem.onet.pl/wiem/0060c4.html
   
   Extractions: Wittig Georg (1897-1987), chemik niemiecki. Profesor uniwersytetów w Tybindze (1944-1956) i Heidelbergu (1956-1967). Bada³ zwi±zki organiczne boru i  fosforu , opracowa³ metodê syntezy alkenów ze zwi±zków karbonylowych i ylidów (tzw. reakcja Wittiga), wyja¶ni³ rolê wolnych rodników podczas polimeryzacji Nagroda Nobla w 1979 (wraz z  H.Ch. Brownem WIEM zosta³a opracowana na podstawie Popularnej Encyklopedii Powszechnej Wydawnictwa Fogra zobacz wszystkie serwisy do góry

2. Georg Wittig
   Translate this page wittig georg, Georg Wittig naquit le 16 juin 1897 à Berlin. Georg Wittig matérialisaprincipalement ses recherches à Tübingen et à Heidelberg.  
   http://membres.lycos.fr/xjarnot/Chimistes/Wittig.html
   
   Extractions: W ittig Georg Les publications de Georg Wittig dans le domaine de la chimie se comptent par centaines. Parmi celles-ci, certaines ont conduit à la découverte de réactifs ou de réactions qui portent son nom. Citons en particulier, le réactif de Wittig : le tétraphénylborate de sodium [(C H B] Na N =CH A partir de 1953, date à laquelle fut publiée sa réaction, les distinctions honorifiques se succédèrent pour Georg Wittig à un rythme particulièrement soutenu. le prix Nobel de chimie pour la réaction Réaction de Wittig pour les cétones Wittig : prix Nobel de chimie en 1979 Pour tous problèmes ou remarques, écrivez au webmaster

3. Georg Wittig - Wikipedia, The Free Encyclopedia
   Printable version Disclaimers. Not logged in Log in Help. Other languagesDeutsch. Georg Wittig. From Wikipedia, the free encyclopedia.  
   http://en.wikipedia.org/wiki/Georg_Wittig
   
   Extractions: Georg Wittig June 16 August 26 ) reported a method for synthesis of alkenes from aldehydes and ketones using compounds called phosphonium ylides . He won the Nobel Prize in Chemistry in This article is a stub . You can help Wikipedia by expanding it Categories Nobel Prize in Chemistry winners Views Personal tools Navigation Search Toolbox Other languages Deutsch This page was last modified 03:58, 1 Jun 2004. All text is available under the terms of the GNU Free Documentation License (see for details).

4. Georg Wittig - Wikipedia, The Free Encyclopedia
   Printable version Disclaimers. Not logged in Log in Help. Otherlanguages Deutsch. Georg Wittig. (Redirected from Wittig). Georg  
   http://en.wikipedia.org/wiki/Wittig
   
   Extractions: (Redirected from Wittig Georg Wittig June 16 August 26 ) reported a method for synthesis of alkenes from aldehydes and ketones using compounds called phosphonium ylides . He won the Nobel Prize in Chemistry in This article is a stub . You can help Wikipedia by expanding it Categories Nobel Prize in Chemistry winners Views Personal tools Navigation Search Toolbox Other languages Deutsch This page was last modified 03:58, 1 Jun 2004. All text is available under the terms of the GNU Free Documentation License (see for details).

5. Georg Wittig
   Georg Wittig. Georg Wittig (1897 1987). German chemist whose methodof synthesizing olefins (alkenes) from carbonyl compounds is  
   http://www.nobel-winners.com/Chemistry/georg_wittig.html
   
   Extractions: German chemist whose method of synthesizing olefins (alkenes) from carbonyl compounds is a reaction often termed the Wittig synthesis. For this achievement he shared the 1979 Nobel Prize for Chemistry. Wittig was born in Berlin and studied at Kassel and Marburg. He was professor at Freiburg 1937-44, Tubingen 1944-56, and Heidelberg 1956-67. In the Wittig reaction, which he first demonstrated 1954, a carbonyl compound (aldehyde or ketone) reacts with an organic phosphorus compound, an alkylidenetriphenylphosphorane, (C6H5)3P=CR2, where R is a hydrogen atom or an organic radical. The alkylidene group (=CR2) of the reagent reacts with the oxygen atom of the carbonyl group to form a hydrocarbon with a double bond, an olefin (alkene). In general:

6. Georg Wittig - Encyclopedia Article About Georg Wittig. Free Access, No Registra
   Herbert C. Brown encyclopedia article about Herbert C. Brown. in 1979 (along with Georg wittig georg Wittig reported a method for synthesis ofalkenes from aldehydes and ketones using compounds called phosphonium ylides.  
   http://encyclopedia.thefreedictionary.com/Georg Wittig
   
   Extractions: Dictionaries: General Computing Medical Legal Encyclopedia Word: Word Starts with Ends with Definition Georg Wittig reported a method for synthesis of alkenes An alkene is a hydrocarbon that has a double bond between two carbon atoms. Alkenes are unsaturated substances. The generic formula is C n H . The simplest alkene is ethene (also known as ethylene Alkenes are relatively stable compounds, but are more reactive than alkanes. Click the link for more information. from aldehydes An aldehyde is either a functional group consisting of a terminal carbonyl group, or a compound containing a terminal carbonyl group. (Where -R represents the carbon chain.) The aldehyde functional group is a carbonyl group bonded to a hydrogen atom and a carbon atom. Click the link for more information. and ketones A ketone is either the functional group characterized by a carbonyl group linked to two other carbon atoms or a compound that contains this functional group. A ketone can be generally represented by the formula: R (CO)R Among the other oxygen-containing compounds, the fact that ketones feature a carbonyl carbon bonded to two carbon atoms distinguishes them from carboxylic acids, aldehydes, esters, and amides. The double-bonded nature of the carbonyl group distinguishes ketones from alcohols and ethers. The smallest ketone is acetone:

7. Georg Wittig - Curriculum Vitae
   georg wittig – Curriculum Vitae. Ttranslation from the German text. To cite thisdocument, always state the source as shown above. georg wittig died in 1987.  
   http://www.nobel.se/chemistry/laureates/1979/wittig-cv.html
   
   Extractions: Textbook on stereochemistry, 1930. Papers on the subject of ring tension and double bonds as well as valency tautomerism. Main research into organic reactions of alkali metals and elaboration of carbon-based chemistry. Discovery of the halogen-metal exchange reaction (simultaneously with H. Gilman). Development of ylide chemistry and, together with that, study of the Stevens and Sommelet rearrangements as well as intra-anionic ether isomerisation. Through the synthesis of the pentaaryl derivatives of the elements of group 5, the phosphorous ylides were discovered and also, in 1953, the carbonylolefins which have since proven to be crucial for the manufacture of synthetic fabrics and also important in other industrial processes. In 1942 dehydrobenzol was proven to be a shortlived by-product, a fact demonstrated bye. D. Roberts in 1953 and by me, only this time using different means, viz. control experiments on Diels - Alder adducts. More recently the concept of the "at"-complexes as a counterpart to the "onium" complexes has led to the development of a new chemistry from which have come the sodium tetra phenylborates.

8. Wittig, Georg
   wittig, georg. ( b. June 16, 1897, Berlin, Ger.d. Aug. 26, 1987, Heidelberg, W.Ger.), German chemist whose studies of organic phosphorus compounds won him a share (with Herbert C. Brown) of the Nobel Prize for Chemistry in 1979. wittig graduated from the University of Marburg in 1923, received his doctorate there in 1926, and remained as a  
   http://www.britannica.com/nobel/micro/642_94.html
   
   Extractions: (b. June 16, 1897, Berlin, Ger.d. Aug. 26, 1987, Heidelberg, W.Ger.), German chemist whose studies of organic phosphorus compounds won him a share (with Herbert C. Brown ) of the Nobel Prize for Chemistry in 1979. In investigating reactions involving carbanions, negatively charged organic species, Wittig discovered a class of organic phosphorus compounds called ylides that mediate a particular type of reaction that became known as the Wittig reaction. This reaction proved of great value in the synthesis of complex organic compounds such as vitamins A and D , prostaglandins, and steroids.

9. Wittig, Georg. The Columbia Encyclopedia, Sixth Edition. 2001
   The Columbia Encyclopedia, Sixth Edition. 2001. wittig, georg During his career, wittig was a professor at the universities of Braunschweig, Freiburg, Tübingen, and Heidelberg  
   http://www.bartleby.com/65/wi/Wittig-G.html
   
   Extractions: Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia Cultural Literacy World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations Respectfully Quoted English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference Columbia Encyclopedia PREVIOUS NEXT ... BIBLIOGRAPHIC RECORD The Columbia Encyclopedia, Sixth Edition. Wittig, Georg

10. Herbert C. Brown And Georg Wittig
    Herbert C. Brown and georg wittig. Our chemists of the week are Herbert C. Brown and georg wittig. We are studying some of their work this week . They jointly won the Nobel Prize in chemstry in 1979 .  
    http://www.brynmawr.edu/Acads/Chem/mnerzsto/brownwittig.htm

11. Georg Wittig Winner Of The 1979 Nobel Prize In Chemistry
    georg wittig, a Nobel Prize Laureate in Chemistry, at the Nobel Prize Internet Archive. georg wittig. 1979 Nobel Laureate in Chemistry Links added by Nobel Internet Archive visitors. georg wittig Curriculum Vitae( submitted by Chinnappan Baskar  
    http://www.almaz.com/nobel/chemistry/1979b.html

12. Georg Wittig - Nobel Lecture
    georg wittig – Nobel Lecture. Nobel Lecture, December 8, 1979. Herbert C. BrownAutobiography Nobel Lecture. georg wittig Curriculum Vitae Nobel Lecture.  
    http://www.nobel.se/chemistry/laureates/1979/wittig-lecture.html

13. Georg Wittig Winner Of The 1979 Nobel Prize In Chemistry
    georg wittig, a Nobel Prize Laureate in Chemistry, at the Nobel Prize InternetArchive. georg wittig. georg wittig information (submitted by Larry).  
    http://almaz.com/nobel/chemistry/1979b.html

14. Index Of Nobel Laureates In Chemistry
    Willstatter, Richard Martin, 1915. Windaus, Adolf Otto Reinhold, 1928. wittig,georg, 1979. Woodward, Robert Burns, 1965. Wüthrich, Kurt, 2002. Zewail, AhmedH, 1999.  
    http://almaz.com/nobel/chemistry/alpha.html

15. Wittig, Georg
    Search Biographies Bio search tips wittig, georg. wittig, georg 18971987 During his career, wittig was a professor at the universities of Braunschweig, Freiburg, Tübingen, and  
    http://www.infoplease.com/ce6/people/A0852563.html
    
    Extractions: Georg Wittig BASF: BASF funds guest professorship at the University of Heidelberg. (M2 Presswire) BASF: Japanese chemistry professor is awarded BASF's guest lectureship at the University of Heidelberg. (M2 Presswire) (book review) (Chemistry and Industry) (book reviews) (Chemistry and Industry) (Agence France Presse Spanish) NOBEL PRIZE IN CHEMISTRY LAUREATES (United Press International) Winners of the Nobel Prize in Chemistry. (United Press International) WINNERS OF THE NOBEL PRIZE IN CHEMISTRY (United Press International) (book reviews) (Chemistry and Industry) Nobel Prize in Che Search HighBeam Research for: About Contact ... Privacy

16. Herbert C. Brown --  Britannica Student Encyclopedia
    , wittig, georg German chemist whose studies of organic phosphorus compounds wonhim a share (with Herbert C. Brown) of the Nobel Prize for Chemistry in 1979.  
    http://www.britannica.com/ebi/article?eu=342973&query=boron nitride&ct=ebi

17. Wittig, Georg
    wittig, georg. wittig, georg 18971987, German chemist, Ph.D. Univ. of Marburg, 1926. During his career, wittig was a professor at the universities of Braunschweig, Freiburg, Tübingen, and Heidelberg.  
    http://www.factmonster.com/ce6/people/A0852563.html

18. Georg Wittig
    History Top Home Historical Aspects of Chemistry. wittig, georg. In 1979,Herbert C. Brown and georg wittig were jointly awarded the Nobel Prize  
    http://orac.sunderland.ac.uk/~hs0bcl/h_gw.htm
    
    Extractions: Died: 26 August, 1987 Wittig discovered his versatile route to alkenes via ylide molecules - the Wittig reaction - in 1949. In 1967, he won the Otto Hahn Prize. In 1979, Herbert C. Brown and Georg Wittig were jointly awarded the Nobel Prize: for their development of the use of boron- and phosphorus-containing compounds, respectively, into important reagents in organic synthesis. See this page at Heidelberg for a picture and some more biographical details (in German). History top Home Ol' Spidey : page last changed 5 April 1997

19. Infoplease Search: Trakl Georg
    actor Birthplace Baltimore Born 1917 Died 1982wittig, georg F. K. ( Almanac People)wittig, georg F. K. chemist, Nobel laureate Birthplace Berlin, Germany Born more Graevius  
    http://www.infoplease.com/search.php3?query=Trakl Georg

20. Wittig, Georg
    wittig, georg (18971987). German chemist whose method of synthesizingolefins (alkenes) from carbonyl compounds is a reaction often  
    http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/W/Wittig/1.html
    
    Extractions: In the Wittig reaction, which he first demonstrated 1954, a carbonyl compound (aldehyde or ketone) reacts with an organic phosphorus compound, an alkylidenetriphenylphosphorane, (C6H5)3P=CR2, where R is a hydrogen atom or an organic radical. The alkylidene group (=CR2) of the reagent reacts with the oxygen atom of the carbonyl group to form a hydrocarbon with a double bond, an olefin (alkene). In general:

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