1. Georg Wittig - Curriculum Vitae Sciences, German Academy of the Natural Scientist Leopoldina Halle. FromNobel Lectures, Chemistry 19711980. georg wittig died in 1987. http://www.nobel.se/chemistry/laureates/1979/wittig-cv.html

Ttranslation from the German text Scientific Activities 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. Honours Honorary Doctorate from the Sorbonne in 1957; Honorary Doctorate from the Universities of and Hamburg in 1962; Adolf von Baeyer Memorial Medal from the German Chemical Society in 1953; Silver Medal from the University of Helsinki University of Zurich University of Louvain ) in 1972; Roger Adams Award from the American Chemical Society in 1973; Karl Ziegler Prize in 1975; Honorary Member of the Swiss Chemical Society in 1963; Honorary Member of the New York Academy of Sciences German Academy of the Natural Scientist Leopoldina Halle From Nobel Lectures , Chemistry 1971-1980.

2. Chemistry 1979 The nobel Prize in Chemistry 1979. Herbert C. Brown, georg wittig.1/2 of the prize, 1/2 of the prize. USA, Federal Republic of Germany. http://www.nobel.se/chemistry/laureates/1979/

The Nobel Prize in Chemistry 1979 "for their development of the use of boron- and phosphorus-containing compounds, respectively, into important reagents in organic synthesis" Herbert C. Brown Georg Wittig 1/2 of the prize 1/2 of the prize USA Federal Republic of Germany Purdue University West Lafayette, IN, USA University of Heidelberg Heidelberg, Federal Republic of Germany b.1912 (in London, United Kingdom) b.1897 d.1987 The Nobel Prize in Chemistry 1979 Press Release Presentation Speech Herbert C. Brown ... Nobel Lecture The 1979 Prize in: Physics Chemistry Physiology or Medicine Literature ... Economic Sciences Find a Laureate: Last modified June 16, 2000 The Official Web Site of The Nobel Foundation

3. Georg Wittig Winner Of The 1979 Nobel Prize In Chemistry georg wittig, a nobel Prize Laureate in Chemistry, at the nobel PrizeInternet Archive. georg wittig. 1979 nobel Laureate in Chemistry http://almaz.com/nobel/chemistry/1979b.html

G EORG W ITTIG 1979 Nobel Laureate in Chemistry for their development of the use of boron- and phosphorus-containing compounds, respectively, into important reagents in organic synthesis. Background Residence: Germany Affiliation: University of Heidelberg Featured Internet Links Prize Co-recipient: Herbert C. Brown Search WWW Search The Nobel Prize Internet Archive Links added by Nobel Internet Archive visitors Georg Wittig – Curriculum Vitae (submitted by Chinnappan Baskar June in Chemistry (submitted by Chinnappan Baskar Back to The Nobel Prize Internet Archive Literature Peace ... Medicine We always welcome your feedback and comments

4. Index Of Nobel Laureates In Chemistry wittig, georg, 1979. Woodward, Robert Burns, 1965. Wüthrich, Kurt, 2002. Zewail,Ahmed H, 1999. Ziegler, Karl, 1963. Zsigmondy, Richard Adolf, 1925. Back to TheNobel http://almaz.com/nobel/chemistry/alpha.html

ALPHABETICAL LISTING OF NOBEL PRIZE LAUREATES IN CHEMISTRY Name Year Awarded Alder, Kurt Altman, Sidney Anfinsen, Christian B. Arrhenius, Svante August ... Medicine We always welcome your feedback and comments

5. Georg Wittig Historical Aspects of Chemistry. wittig, georg German chemist, nobel Prizewinner1979 for the wittig Reaction Born Berlin, 16 June, 1897 Died 26 August, 1987. http://www.sunderland.ac.uk/~hs0bcl/h_gw.htm

History Top Home Historical Aspects of Chemistry Wittig, Georg German chemist, Nobel Prizewinner 1979 for the Wittig Reaction Born: Berlin, 16 June, 1897 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

6. The Wittig Reaction georg wittig well deserved his nobel Prize in 1979 and is a hero of mine becausehe was a doddering 56 years old when he discovered this very versatile http://www.sunderland.ac.uk/~hs0bcl/org8.htm

Prev page Next page Teaching top Home How to Tackle Organic Syntheses - A Beginner's Guide by Prof Otto Meth-Cohn The Wittig Reaction Georg Wittig well deserved his Nobel Prize in 1979 - and is a hero of mine because he was a doddering 56 years old when he discovered this very versatile reaction. The idea is very simple - as are all good ideas. Phosphorus is a second row element - in Group 5 - like nitrogen - but unlike nitrogen can expand its valency from 3 to 4, 5, or even 6. The stable 5 valency is met in compounds like phosphoric acid and PCl . What Wittig discovered was that phosphines (the P equivalent of amines) easily form phosphonium salts with alkyl halides and that these salts readily lose HX with a strong base. The product is called an ylide or a phosphorane . The ylide is a very polar molecule with a carbanionic carbon (aren't carbanions useful?!). How to make a phosphorus ylide This ylide reacts enthusiastically with an aldehyde or ketone to give an alkene. How to make an alkene using the Wittig reaction You'll notice that the reaction involves formation of a 4-membered ring intermediate and that the very stable phosphine oxide is a by-product. The great thing for hard-pressed student synthesizers is that the alkene is made up by linking an aldehyde or ketone to an alkyl halide replacing the O and the halide by a double bond. Just snip the alkene at the double bond and make one half an aldehyde or ketone and the other half an alkyl halide.

7. Wittig, Georg wittig, georg. Heidelberg, W.Ger.), German chemist whose studies of organic phosphoruscompounds won him a share (with Herbert C. Brown) of the nobel Prize for http://www.britannica.com/nobel/micro/642_94.html

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. 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.

8. Nobel Prize Winners For Chemistry substances. wittig, georg, West Germany, introduction of compoundsof boron and phosphorus in the synthesis of organic substances. 1980, http://www.britannica.com/nobel/table/chem.html

Year Article Country* Achievement Hoff, Jacobus Henricus van't The Netherlands laws of chemical dynamics and osmotic pressure Fischer, Emil Germany work on sugar and purine syntheses Arrhenius, Svante Sweden theory of electrolytic dissociation Ramsay, Sir William U.K. discovery of inert gas elements and their places in the periodic system Baeyer, Adolf von Germany work on organic dyes, hydroaromatic compounds Moissan, Henri France isolation of fluorine; introduction of Moissan furnace Buchner, Eduard Germany discovery of noncellular fermentation Rutherford, Ernest U.K. investigations into the disintegration of elements and the chemistry of radioactive substances Ostwald, Wilhelm Germany pioneer work on catalysis, chemical equilibrium, and reaction velocities Wallach, Otto Germany pioneer work in alicyclic combinations Curie, Marie France discovery of radium and polonium; isolation of radium Grignard, Victor France discovery of the Grignard reagents Sabatier, Paul France method of hydrogenating organic compounds Werner, Alfred

9. Wittig, Georg. The Columbia Encyclopedia, Sixth Edition. 2001 wittig, georg. During his career, wittig was a professor at the universities of Braunschweig Heshared the 1979 nobel Prize in Chemistry with Herbert C. Brown http://www.bartleby.com/65/wi/Wittig-G.html

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10. Brown, Herbert Charles. The Columbia Encyclopedia, Sixth Edition. 2001 of Chicago, 1938. A professor at Wayne State Univ. (1943–47) and Purdue Univ.(1947–), he shared the 1979 nobel Prize in Chemistry with georg wittig. http://www.bartleby.com/65/br/BrownHC.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia 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 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. Brown, Herbert Charles

11. Wittig, Georg wittig, georg, 1897–1987, German chemist, Ph.D. Univ During his career, wittig wasa professor at the He shared the 1979 nobel Prize in Chemistry with Herbert http://www.infoplease.com/cgi-bin/id/A0852563

The # 1 wireless color security cam! Ultimate home movie ! Genuine Indian and Asian astrology reports and consultations by reputed Vedic Astrologers. Step-by-step guide to finding money for a growing business All Infoplease All Almanacs General Entertainment Sports Biographies Dictionary Encyclopedia Infoplease Home Almanacs Atlas Dictionary ... Fact Monster Kids' reference Info:Daily Fun facts Homework Center Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network Encyclopedia Wittig, Georg Wittig, Georg, Brown for his discovery of a class of compounds, ylides, that substantially facilitate the synthesis of certain organic compounds. Wittgenstein, Ludwig Josef Johann Wittkower, Rudolf Search Infoplease Info search tips Search Biographies Bio search tips About Us Contact Us Link to Infoplease ... Privacy

12. Wittig, Georg F. K. peopleBiography—People—W wittig, georg FK chemist, nobel laureateBirthplace Berlin, Germany Born 1897 Died 1987 Previous http://www.infoplease.com/ipa/A0301540.html

The # 1 wireless color security cam! Ultimate home movie ! Genuine Indian and Asian astrology reports and consultations by reputed Vedic Astrologers. Step-by-step guide to finding money for a growing business All Infoplease All Almanacs General Entertainment Sports Biographies Dictionary Encyclopedia Infoplease Home Almanacs Atlas Dictionary ... Fact Monster Kids' reference Info:Daily Fun facts Homework Center Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network Biography People W Wittig, Georg F. K. chemist, Nobel laureate Birthplace: Berlin, Germany Born: Died: Witherspoon, Reese W Wittgenstein, Ludwig Search Infoplease Info search tips Search Biographies Bio search tips About Us Contact Us Link to Infoplease ... Privacy

13. FECS Millennium Project - Wittig wittig, georg Born Berlin (Germany), 1897 Died Heidelberg (Germany), 1987. wittigstudied in Tübingen and Marburg. C. Brown he was awarded the nobel Prize. http://www.chemsoc.org/networks/enc/fecs/Wittig.htm

FECS Millennium Project 100 Distinguished European Chemists 20th Century Wittig, Georg Born: Berlin (Germany), 1897 Died: Heidelberg (Germany), 1987 Links www.nobel.se/chemistry/laureates/1979/index.html http://www.nobelprizes.com/nobel/chemistry/1979b.html http://orac.sunderland.ac.uk/~hs0bcl/h_gw.htm http://orac.sunderland.ac.uk/~hs0bcl/org8.htm For further information on this chemist search the RSC's historical chemistry information service provided by the Library and Information Centre Go to 20th Century Chemists About ENC FECS ... Visit chemsoc, the RSC’s chemical science network

14. Georg Wittig Translate this page à l’institut de professeur H. Staudinger (prix nobel, 1953) à georg Wittigmatérialisa principalement ses recherches à Tübingen et à Heidelberg. http://membres.lycos.fr/xjarnot/Chimistes/Wittig.html

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. prix Otto Hahn (1967) prix K. Ziegler de la société chimique allemande (1975) la société chimique suisse (1963) la société chimique de Londres (1968) la Société chimique de France (1972) 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

15. Tous Les Prix Nobel De Chimie Prix nobels, Alfred nobel. A. Kurt Alder. Sydney Altman. Christian B. Anfinsen. RichardWillslater. Adolf Otto Reinhold Windaus. georg wittig. Robert Burns Woodward. Y. http://membres.lycos.fr/xjarnot/Chimistes/Prix_Nobel_alphabetique.html

16. Wittig, Georg wittig, georg (18971987 from carbonyl compounds is a reaction often termed the wittigsynthesis For this achievement he shared the 1979 nobel Prize for Chemistry http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/W/Wittig/1.html

Wittig, Georg 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. 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: (C6H5)3P=CR2 + R2'CO (C6H5)3PO + R2C=CR2 The reaction is widely used in organic synthesis, for example to make squalene (the synthetic precursor of cholesterol) and vitamin D3.

17. Nobel Laureates In Chemistry By Alphabetical Order Themes Science Chemistry About Chemistry Generalities nobel Laureatesin Chemistry by Alphabetical order. Name, Year Awarded. wittig, georg, 1979. http://www.cartage.org.lb/en/themes/Sciences/Chemistry/Aboutchemistry/AlphaNobel

18. Wittig, Georg (1897-1987), Chimiste Allemand Translate this page georg wittig (1897-1987). Chimiste allemand. wittig a reçu le prix nobel de chimieen 1979, conjointement à l'Américain Herbert Brown. LISTE. HOME. http://isimabomba.free.fr/biographies/chimistes/wittig.htm

Georg Wittig (1897-1987) C himiste allemand. E L LISTE HOME

19. Les Prix Nobel De Chimie Translate this page Les Prix nobel de Chimie. Scientifiques. Nationalités. 1901. Jacobus Henricus Van'tHoff. Royaume-Uni. 1979. Herbert Brown georg wittig. Royaume-Uni Allemagne. 1980. http://isimabomba.free.fr/prix_nobel/prix_nobel.htm

Les Prix Nobel de Chimie Scientifiques Jacobus Henricus Van't Hoff Pays-Bas Emil Hermann Fischer Allemagne August Svante Arrhenius Sir William Ramsay Royaume-Uni Adolf Von Baeyer Allemagne Henri Moissan France Eduard Buchner Allemagne Lord Ernest Rutherford Royaume-Uni Wilhelm Ostwald Allemagne O. Wallach Allemagne Marie Curie France Victor Grignard Paul Sabatier France France Alfred Werner Suisse T Richards Etats-Unis R Willstatter Allemagne F Haber Allemagne Walter Hermann Nernst Allemagne Royaume-Uni F Waston Royaume-Uni F Pregl Autriche R Zsigmondy Allemagne Theodor Svedberg H Wieland Allemagne Adolf Windaus Allemagne A Harden H Von Euler-Chelpin Royaume-Uni Allemagne H Fischer Allemagne Carl Bosch Friedrich Karl Rudolph Bergius Allemagne Allemagne Irving Langmuir Etats-Unis Harold Clayton Urey Etats-Unis France France Petrus Josephus Wilhelmus Debye Pays-Bas Sir Walter Norman Haworth Paul Karrer Royaume-Uni Suisse Allemagne Adolf Butenandt Leopold Ruzicka Allemagne Suisse Georg Hevesy de Heves Hongrie Otto Hahn Allemagne AJ Virtanen Finlande JB Sumer JH Northrop WM Stanley Etats-Unis Etats-Unis Etats-Unis R Robinson Royaume-Uni Arne Wilhelm Kaurin Tiselius William Francis Giauque Etats-Unis Otto Paul Hermann Diels Kurt Alder Allemagne Allemagne Glenn Theodore Seaborg Edwin Mattison McMillan Etats-Unis Etats-Unis AJP Martin LM Synge Royaume-Uni Royaume-Uni Hermann Staudinger Allemagne Linus Carl Pauling Etats-Unis Vincent du Vigneaud Etats-Unis CN Hinshelwood Royaume-Uni Russie A Todd Royaume-Uni Frederick Sanger Royaume-Uni J Heyrovsky Willard Frank Libby Etats-Unis Melvin Calvin Etats-Unis

20. Herbert C. Brown And Georg Wittig 1979. To see pictures of HC Brown and georg wittig please go to .http//nobel.sdsc.edu/laureates/chemistry1979.html. A biography http://www.brynmawr.edu/Acads/Chem/mnerzsto/brownwittig.htm

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. To see pictures of H.C. Brown and Georg Wittig please go to.... http://nobel.sdsc.edu/laureates/chemistry-1979.html A biography in English on Georg Wittig is at the following web address.... http://nobel.sdsc.edu/laureates/chemistry-1979-2-cv.html A more detailed biography in French can be found at http://www.multimania.com/xjarnot/Chimistes/Wittig.html I can barely remember my French, but I could follow sections of it. An autobiography by HC Brown can be found at http://nobel.sdsc.edu/laureates/chemistry-1979-1-autobio.html [ B a c k t o H i s t o r y o f C h e m i s t r y ]

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