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Wittig
Wittig is a surname, and may refer to: * Burghardt Wittig (born 1947), German biochemist * Curt Wittig, American chemist * David Wittig (born 1955), American executive * Edward Wittig (1879–1941), Polish sculptor * Ferdinand Wittig (1851-1909), American politician * Georg Wittig (1897–1987), German chemist * Iris Wittig (1928-1978), German military pilot * Johnnie Wittig (1914–1999), former Major League pitcher * Martin C. Wittig (born 1964), German CEO * Michael Wittig (born 1976), American musician * Monique Wittig (1935–2003), French author and feminist theorist * Peter Wittig (born 1954), German diplomat * Rüdiger Wittig (born 1946), German professor of geobotany and ecology * Sigmar Wittig (born 1940), German Chair of the European Space Agency * Susan Wittig Albert (born 1940), American mystery writer See also * Wittich * Wittig River * 1,2-Wittig rearrangement * 2,3-Wittig rearrangement * Wittig reaction The Wittig reaction or Wittig olefination is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monique Wittig
Monique Wittig (; July 13, 1935 – January 3, 2003) was a French author, philosopher and feminist theorist who wrote about abolition of the sex-class system and coined the phrase "heterosexual contract". Her seminal work is titled ''The Straight Mind and Other Essays'' She published her first novel, ''L'Opoponax'', in 1964. Her second novel, '' Les Guérillères'' (1969), was a landmark in lesbian feminism. Biography Monique Wittig was born in 1935 in Dannemarie, Haut-Rhin, France. In 1950 she moved to Paris to study at the Sorbonne. In 1964 she published her first novel, ''L'Opoponax'' which won her immediate attention in France. After the novel was translated into English, Wittig achieved international recognition. She was one of the founders of the ''Mouvement de libération des femmes'' (MLF) (Women's Liberation Movement). In 1969 she published what is arguably her most influential work, '' Les Guérillères'', which is today considered a revolutionary and controversial so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burghardt Wittig
Burghardt Wittig (born 1947 in Celle, Germany) is the chairman oMolBio2Mathand a professor of biochemistry and molecular biology at Freie Universitaet Berlin in Berlin (FUB), Germany. His research focuses on the areas of gene regulation, DNA structures induced by torsional strain, chromatin structure, G-protein-mediated signal transduction, as well as therapeutic applications of genetic research and DNA-based vaccines. His research has been published in numerous leading scientific journals, including Cell, Nature, PNAS, and Science. Early life Wittig was born in Celle, Germany, where he attended the classical "Gymnasium Ernestinum". He graduated by the German Abitur in fall 1966, followed by two years of service in the German military. Career and Research Wittig enrolled at Freie Universitaet Berlin in 1968 to study medicine. While attending medical school, he also received training as an engineer specialised in hearing aids (audiologist) and graduated by the German Gesel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Wittig
Georg Wittig (; 16 June 1897 – 26 August 1987) was a German chemist who reported a method for synthesis of alkenes from aldehydes and ketones using compounds called phosphonium ylides in the Wittig reaction. He shared the Nobel Prize in Chemistry with Herbert C. Brown in 1979. Biography Wittig was born in Berlin, Germany and shortly after his birth moved with his family to Kassel, where his father was professor at the applied arts high school. He attended school in Kassel and started studying chemistry at the University of Tübingen 1916. He was drafted and became a lieutenant in the cavalry of Hesse-Kassel (or Hesse-Cassel). After being an Allied prisoner of war from 1918 until 1919, Wittig found it hard to restart his chemistry studies owing to overcrowding at the universities. By a direct plea to Karl von Auwers, who was professor for organic chemistry at the University of Marburg at the time, he was able to resume university study and after 3 years was awarded the Ph.D. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Curt Wittig
Curt Franklin Wittig is a Professor of Chemistry and the holder of the Paul A. Miller Chair in the College of Letters, Arts, and Sciences at the University of Southern California (USC). Born and raised in Chicago, Illinois, Curt Wittig received his B.S. and Ph.D in Electrical Engineering from the University of Illinois in 1970. Post-doctoral work (EE at USC, Chemistry at Cambridge (UK) and UC Berkeley) was followed by a faculty appointment in 1973 at USC in the EE Department. After becoming a professor in 1979, his interests changed, and he moved to the Chemistry and Physics Departments in 1981, settling eventually in the Chemistry Department, where he has specialized in physical chemistry (chemical physics) ever since. Wittig and his wife, Michele, live in Santa Monica, California. Research focus His earliest contributions were technological: invention of the continuous carbon monoxide chemical laser in 1969, and development and demonstration of the so-called infrared pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,3-Wittig Rearrangement
The [2,3]-Wittig rearrangement is the transformation of an allylic ether into a homoallylic Alcohol (chemistry), alcohol via a concerted, pericyclic reaction, pericyclic process. Because the reaction is concerted, it exhibits a high degree of stereocontrol, and can be employed early in a synthetic route to establish stereochemistry. The Wittig rearrangement requires strongly basic conditions, however, as a carbanion intermediate is essential. 1,2-Wittig rearrangement, [1,2]-Wittig rearrangement is a competitive process. Introduction [2,3]-Sigmatropic rearrangements occur for a variety of groups X and Y (see below). When X is a carbanion and Y an alkoxide, the rearrangement is called the [2,3]-Wittig rearrangement and the products are pent-1-en-5-ols. The [1,2]-Wittig rearrangement, which produces isomeric pent-5-en-1-ols, is a competitive process that takes place at high temperatures. Because of the high atom economy and stereoselectivity of the [2,3]-rearrangement, it has gained c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Wittig
David Wittig (born July 29, 1955) is the former chief executive officer of Topeka, Kansas-based Westar Energy, a utility company. Born in Kansas City, Missouri, Wittig became a Wall Street investment banker. In 1995, Wittig, having earned millions in New York, was asked to return to Kansas as an executive at Western Resources (later renamed Westar Energy) by John E. Hayes, then CEO of Western and a customer of Wittig's at Salomon Brothers. At that time, Warren Buffett had taken over Salomon in the wake of a trading scandal "and decided to cut the exorbitant compensation of the firm’s managing directors." Wittig accepted the Western invitation, and was named President in 1998 and Chairman and CEO in January 1999. He quickly became one of Topeka's most prominent citizens and was a generous contributor to local charities. Wittig supported the Multi-cultural Business Scholars Program at the University of Kansas and established a $250,000 scholarship in his family's name. He then pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Wittig
Peter Wittig (born 11 August 1954) is a former German diplomat and has been Germany's Ambassador to the Court of St. James in the United Kingdom from July 2018, to April 2020, after having served as Ambassador to the United States from 30 April 2014, to 20 June 2018 and Permanent Representative at the United Nations in New York from 2009 to 2014. Early life and education Wittig studied at the University of Bonn, the University of Freiburg, University of Kent, and the University of Oxford. He has taught as an assistant professor at the University of Freiburg. Diplomatic career After joining the German foreign service in 1982, Wittig served as German ambassador to Lebanon and to Cyprus. In 2009 Wittig was appointed to serve as Germany's permanent representative to the United Nations. Wittig has served twice as the President of the United Nations Security Council, once in July 2011 and again in September 2012. Between 2011 and 2012, he headed among other committees the Al-Qaida S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wittig River
Wittig is a surname, and may refer to: * Burghardt Wittig (born 1947), German biochemist * Curt Wittig, American chemist * David Wittig (born 1955), American executive * Edward Wittig (1879–1941), Polish sculptor * Ferdinand Wittig (1851-1909), American politician * Georg Wittig (1897–1987), German chemist * Iris Wittig (1928-1978), German military pilot * Johnnie Wittig (1914–1999), former Major League pitcher * Martin C. Wittig (born 1964), German CEO * Michael Wittig (born 1976), American musician * Monique Wittig (1935–2003), French author and feminist theorist * Peter Wittig (born 1954), German diplomat * Rüdiger Wittig (born 1946), German professor of geobotany and ecology * Sigmar Wittig (born 1940), German Chair of the European Space Agency * Susan Wittig Albert (born 1940), American mystery writer See also * Wittich * Wittig River * 1,2-Wittig rearrangement * 2,3-Wittig rearrangement * Wittig reaction The Wittig reaction or Wittig olefination is a ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Wittig
Michael Richard Wittig (born August 21, 1976) is an American Christian musician who is best known as " Kalel", the current bass player for the Dove Awards winning and Grammy nominated Christian hard rock band Pillar. After ten years of playing with Pillar, Wittig left the band in September 2008. He then later returned to the band in 2012. He was also a member of pop rock band Stars Go Dim, with Joey Avalos, Lester Estelle Jr. (former drummer for Pillar) and Chris Cleveland till 2012. Biography Musical career In 1992 he formed a Christian band in his garage. The band was originally called ''Q: The Source'' (named after the Q document), but they eventually renamed it as ''Godspeed'' for the release of their self-titled EP. Wittig's fellow Godspeed members were Mahlon Tobias and Robert Brouhard. He graduated from Riverside Polytechnic High School in 1994, and soon left to go to college in Hays, Kansas at Fort Hays State University. While living there he played bass for a Chr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1,2-Wittig Rearrangement
A 1,2-Wittig rearrangement is a categorization of chemical reactions in organic chemistry, and consists of a 1,2-rearrangement of an ether with an alkyllithium compound. The reaction is named for Nobel Prize winning chemist Georg Wittig. : \mathsf The intermediate product is an alkoxy lithium salt and the final product an alcohol. When R" is a good leaving group and electron withdrawing group such as a cyanide (CN) group,''Preparation of aryl benzyl ketones by ,2Wittig rearrangement'' Alan R. Katritzky, Yuming Zhang, Sandeep K. Singh Arkivoc pp. 146–50 2002 (viilink this group is eliminated and the corresponding ketone is formed. : \mathsf Reaction mechanism The reaction mechanism centers on the formation of a free radical pair with lithium migrating from the carbon atom to the oxygen atom. The R radical then recombines with the ketyl.''Wittig Rearrangement of Lithiated Allyl Aryl Ethers: A Mechanistic Study'' Sven Strunk, Manfred Schlosser European Journal of Organic Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Wittig
Edward Wittig (September 20, 1879 – March 3, 1941) was a Polish sculptor and university professor, notable for designing many monuments in Warsaw. Born in Warsaw, Wittig went on to study art at the Academy of Fine Arts Vienna under the tutelage of J. Tautenheim between 1897 and 1900. He then moved to Paris, where he graduated from the École des Beaux-Arts. His tutor there was Madeleine Jouvray, a pupil of Auguste Rodin and Lucien Schnegg. One of his friends during this period was Magnus Enckell. In 1909 he returned to Poland and settled in Podolia, in a residence owned by friends. There he prepared a number of sculptures, some of which were presented at the Paris Salon. After 1903, he was invited to display his work at many top art galleries. His works were also featured at the Zachęta gallery in Warsaw (since 1900), at the Society of Friends of Fine Arts of Kraków, and the Venice Biennale in 1920 and 1934. Between 1915 and 1920, he was one of the professors of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rüdiger Wittig
Rüdiger Wittig (born October 17, 1946 in Herne, West Germany) is a professor of geobotany and ecology at the Goethe University Frankfurt in Frankfurt am Main, Germany. Career From 1968 to 1973, Wittig studied biology and chemistry at the Wilhelms-University of Westphalia in Münster and passed the state examination, followed by doctoral studies from 1973 to 1976 (Dr.rer.nat.). Until the completion of his postdoctoral lecture qualification in 1980, he was a research associate at the Wilhelms-University in Münster. From 1980 until 1988, Wittig was professor for botany at the Heinrich Heine University of Düsseldorf and chair of the department for geobotany at the Institute for Plant Physiology. Since 1989, he has been a professor for ecology and geobotany at the Goethe University Frankfurt in Frankfurt am Main. In 2002, a specific type of blackberry The blackberry is an edible fruit produced by many species in the genus ''Rubus'' in the family Rosaceae, hybrids among these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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