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Wolfgang Steglich
Wolfgang Steglich (born 12 August 1933) is a German chemist . Life Wolfgang Steglich was born in Kamenz and studied chemistry at the Technical University of Berlin and later at the Technical University of Munich where he received his PhD in 1960 for work with Friedrich Weygand. Following a postdoc stay with Sir Derek H. R. Barton at the Imperial College London, Wolfgang Steglich completed his habilitation at the Technical University of Munich. After Friedrich Weygand's decease in 1969, Steglich was in charge of the Weygand chair until he became a full professor at the Technical University of Berlin in 1971. In 1975, he was appointed a professorship at the University of Bonn. He succeeded Rolf Huisgen as head of the organic chemistry department of the University of Munich in 1991. Wolfgang Steglich retired in 2001. Work The use of 4-dimethylaminopyridine for esterifications with anhydrides, which is sometimes called the Steglich esterification, his studies on the metabolis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kamenz
Kamenz () or Kamjenc ( Sorbian) is a town (''Große Kreisstadt'') in the district of Bautzen in Saxony, Germany. Until 2008 it was the administrative seat of Kamenz District. The town is known as the birthplace of the philosopher and poet Gotthold Ephraim Lessing and Bruno Hauptmann, convicted kidnapper of the Lindbergh baby. It lies north-east of the major city of Dresden. Geography This small town is located in the west of the Upper Lusatia historic region (West Lusatia), about northeast of Dresden and about northwest of Bautzen. Situated on the Black Elster river, between the West Lusatian Hills and the Lusatian Highlands rising in the south, the town was built on greywacke and granite rocks which were mined here for centuries. Kamenz railway station is the terminus of Lübbenau–Kamenz and Kamenz–Pirna railway lines. It is served by '' Regionalbahn'' trains from Dresden Hauptbahnhof, operated by the Städtebahn Sachsen. The Hutberg hill west of the town centre, at an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Heinz Beckurts
Karl Heinz Beckurts (born 16 May 1930 in Rheydt; murdered 9 July 1986 in Straßlach near Munich) was a German physicist and research manager. With Karl Wirtz, he wrote a textbook on neutron physics. He was co-editor of the journal '' Nukleonik''. Along with his driver, Eckhard Groppler, Beckurts was murdered by a roadside bomb at 7:32 AM on 9 July 1986 in Straßlach, a village near Munich. The bomb used an electronic triggering device. The Red Army Faction claimed responsibility under the name "Kommando Mara Cagol" but the identity of the perpetrators is still unknown. The '' Bundeskriminalamt'' named Horst Ludwig Meyer as the only suspect for the bombing; Meyer was fatally shot in 1999 by the police in Vienna. Early life and education He was born to Karl Beckurts (1894–1952) and Gisela Beckurts, who was born the Countess of Brockdorff. He began studying physics in 1949 at the University of Göttingen, where he received an undergraduate degree in 1954 and in 1956 earned his do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1933 Births
Events January * January 11 – Sir Charles Kingsford Smith makes the first commercial flight between Australia and New Zealand. * January 17 – The United States Congress votes in favour of Philippines independence, against the wishes of U.S. President Herbert Hoover. * January 28 – "Pakistan Declaration": Choudhry Rahmat Ali publishes (in Cambridge, UK) a pamphlet entitled ''Now or Never; Are We to Live or Perish Forever?'', in which he calls for the creation of a Muslim state in northwest India that he calls " Pakstan"; this influences the Pakistan Movement. * January 30 ** National Socialist German Workers Party leader Adolf Hitler is appointed Chancellor of Germany by President of Germany Paul von Hindenburg. ** Édouard Daladier forms a government in France in succession to Joseph Paul-Boncour. He is succeeded on October 26 by Albert Sarraut and on November 26 by Camille Chautemps. February * February 1 – Adolf Hitler gives his "Proclamation to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steglich Esterification
The Steglich esterification is a variation of an esterification with dicyclohexylcarbodiimide as a coupling reagent and 4-dimethylaminopyridine as a catalyst. The reaction was first described by Wolfgang Steglich in 1978. It is an adaptation of an older method for the formation of amides by means of DCC (dicyclohexylcarbodiimide) and 1-hydroxybenzotriazole (HOBT). : This reaction generally takes place at room temperature. A suitable solvent is dichloromethane. Because the reaction is mild, esters can be obtained that are inaccessible through other methods for instance esters of the sensitive 2,4-dihydroxybenzoic acid. A characteristic is the formal uptake of water generated in the reaction by DCC, forming the urea compound dicyclohexylurea (DCU). Reaction mechanism The reaction mechanism is described as follows: With amines, the reaction proceeds without problems to the corresponding amides because amines are more nucleophilic. If the esterification is slow, a side-reactio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anhydride
An organic acid anhydride is an acid anhydride that is an organic compound. An acid anhydride is a compound that has two acyl groups bonded to the same oxygen atom. A common type of organic acid anhydride is a carboxylic anhydride, where the parent acid is a carboxylic acid, the formula of the anhydride being (RC(O))2O. Symmetrical acid anhydrides of this type are named by replacing the word ''acid'' in the name of the parent carboxylic acid by the word ''anhydride''. Thus, (CH3CO)2O is called ''acetic anhydride.'' Mixed (or unsymmetrical) acid anhydrides, such as acetic formic anhydride (see below), are known, whereby reaction occurs between two different carboxylic acids. Nomenclature of unsymmetrical acid anhydrides list the names of both of the reacted carboxylic acids before the word "anhydride" (for example, the dehydration reaction between benzoic acid and propanoic acid would yield "benzoic propanoic anhydride"). One or both acyl groups of an acid anhydride may also be d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esterification
In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides are fatty acid esters of glycerol; they are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Phosphoesters form the backbone of DNA molecules. Nitrate esters, such as nitroglycerin, are known for their explosive properties. '' Nomenclature Etymology The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolf Huisgen
Rolf Huisgen (; 13 June 1920 – 26 March 2020) was a German chemist. His importance in synthetic organic chemistry extends to the enormous influence he had in post-war chemistry departments in Germany and Austria, due to a large number of his Habilitation, habilitants becoming professors. His major achievement was the development of the 1,3-dipolar cycloaddition reaction, also called the Azide-alkyne Huisgen cycloaddition, Huisgen cycloaddition. Life Huisgen was born in Gerolstein in Rhineland-Palatinate and studied in Munich under the supervision of Heinrich Otto Wieland. He completed his Ph.D. in 1943 with a thesis about a strychnine alkaloid. He completed his habilitation in 1947, and was appointed professor at the University of Tübingen in 1949. He returned to the University of Munich in 1952, succeeding Wieland, and he remained dedicated to research long after attaining emeritus status there in 1988. One of his major achievements was the development of the 1,3-dipolar c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habilitation
Habilitation is the highest university degree, or the procedure by which it is achieved, in many European countries. The candidate fulfills a university's set criteria of excellence in research, teaching and further education, usually including a dissertation. The degree, abbreviated "Dr. habil." (Doctor habilitatus) or "PD" (for "Privatdozent"), is a qualification for professorship in those countries. The conferral is usually accompanied by a lecture to a colloquium as well as a public inaugural lecture. History and etymology The term ''habilitation'' is derived from the Medieval Latin , meaning "to make suitable, to fit", from Classical Latin "fit, proper, skillful". The degree developed in Germany in the seventeenth century (). Initially, habilitation was synonymous with "doctoral qualification". The term became synonymous with "post-doctoral qualification" in Germany in the 19th century "when holding a doctorate seemed no longer sufficient to guarantee a proficient transfer o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derek Barton
Sir Derek Harold Richard Barton (8 September 1918 – 16 March 1998) was an English organic chemist and Nobel Prize laureate for 1969. Education and early life Barton was born in Gravesend, Kent, to William Thomas and Maude Henrietta Barton (''née'' Lukes). He attended Gravesend Grammar School (1926–29), The King's School, Rochester (1929–32), Tonbridge School (1932–35) and Medway Technical College (1937–39). In 1938 he entered Imperial College London, where he graduated in 1940 and obtained his Doctor of Philosophy, PhD degree in Organic Chemistry in 1942. Career and research From 1942 to 1944 Barton was a government research chemist, then from 1944 to 1945 he worked for Albright and Wilson in Birmingham. He then became Assistant Lecturer in the Department of Chemistry of Imperial College, and from 1946 to 1949 he was Imperial Chemical Industries, ICI Research Fellow. During 1949 and 1950 he was visiting lecturer in natural products chemistry at Harvard University, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order Of Merit Of The Federal Republic Of Germany
The Order of Merit of the Federal Republic of Germany (german: Verdienstorden der Bundesrepublik Deutschland, or , BVO) is the only federal decoration of Germany. It is awarded for special achievements in political, economic, cultural, intellectual or honorary fields. It was created by the first President of the Federal Republic of Germany, Theodor Heuss, on 7 September 1951. Colloquially, the decorations of the different classes of the Order are also known as the Federal Cross of Merit (). It has been awarded to over 200,000 individuals in total, both Germans and foreigners. Since the 1990s, the number of annual awards has declined from over 4,000, first to around 2,300–2,500 per year, and now under 2,000, with a low of 1752 in 2011. Since 2013, women have made up a steady 30–35% of recipients. Most of the German federal states (''Länder'') have each their own order of merit as well, with the exception of the Free and Hanseatic Cities of Bremen and Hamburg, which rejec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
