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Pictet
Pictet may refer to: Surname * Adolphe Pictet (1799–1875), Swiss linguist * Amé Pictet (1857–1937), Swiss chemist * Benedict Pictet (1655–1724), Genevan theologian * Charles Pictet de Rochemont (1755–1824), Swiss politician * Francis Pictet (born 1866), Australian cricketer * François Jules Pictet de la Rive (1809–1872), Swiss zoologist and palaeontologist * Jean Pictet (1914–2002), Swiss citizen, jurist, legal practitioner, honorary doctorate * Marc-Auguste Pictet (1752–1825), Swiss physicist * Marion MacMillan Pictet, American heiress * Raoul Pictet (1846–1929), Swiss physicist, one of the first two people to liquefy oxygen Other uses * Pictet (crater), crater on the moon, named after Marc-Auguste Pictet * Pictet-Gams isoquinoline synthesis, variation on the Bischler–Napieralski reaction producing Isoquinoline * Pictet-Hubert reaction, producing Phenanthridine from the 2-aminobiphenyl – formaldehyde adduct and zinc chloride * Pictet–Spengler reaction, chemi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marion MacMillan Pictet
Marion Hamilton MacMillan Pictet (October 17, 1932 - August 30, 2009) was an American heiress.Brian SolomonThe Secretive Cargill Billionaires And Their Family Tree ''Forbes'', 9/22/2011 She was a great-granddaughter of William Wallace Cargill, the founder of Cargill. Her father was John H. MacMillan She had two brothers John Hugh MacMillan and Whitney Duncan MacMillan. She lived in Hamilton, Bermuda, and she was divorced. In 2010, her estate was estimated to be worth approximately US$4.5 billion. She died in The Bahamas in August 2009. Her only daughter, Gwendolyn Sontheim Meyer, is an equestrian. References 2009 deaths People from Hamilton, Bermuda American billionaires Cargill people 1932 births {{Bermuda-bio-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolphe Pictet
Adolphe Pictet (11 September 1799 – 20 December 1875) was a Swiss linguist, philologist and ethnologist. Pictet, the cousin of the biologist Francois Jules Pictet, is well known for his research in the field of comparative linguistics. He played a crucial formative role in the development of Ferdinand de Saussure; "it was Pictet who introduced the thirteen-year-old Saussure to the theoretical foundations of Indo-European linguistics." But he was also "a dedicated champion of German Romanticism and idealist philosophy":Like French, English, and Russian Romantics since the beginning of the century, he made a journey to Germany, where he became acquainted with A. W. Schlegel (with whom he maintained an important correspondence over the course of many years), Goethe, Hegel, Schleiermacher, and Schelling. ... In the spirit of earlier wars between “romantics” and “classics” (a little outmoded by the 1850s), Pictet envisioned Romanticism, with its embrace of pluralism and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pictet (crater)
Pictet is a lunar impact crater located just to the east of the larger and more prominent impact crater Tycho. The high-albedo rays and ejecta from Tycho lie across Pictet and spread far to the east and in other directions. Pictet is older than Tycho and is somewhat worn by past impacts. The slightly smaller crater Pictet A intrudes slightly into the southwest rim. The larger crater Pictet E is nearly joined to the north rim. To the east is Saussure, and to the northeast is the larger, worn formation Orontius. Swiss physicist Marc-Auguste Pictet Marc-Auguste Pictet (; 23 July 1752 – 19 April 1825) was a Swiss scientific journalist and experimental natural philosopher. Pictet's main contribution to learning was his editing of the scientific section of the '' Bibliothèque Britan ... (eponym of Pictet crater) was the student and later colleague and friend of Horace-Bénédict de Saussure (eponym of nearby Saussure crater). Satellite craters By convention these feat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LeRoy And Pictet
LeRoy and Pictet was a co-operative company which recruited Germans to settle in Russia in the 18th century, under commission by Tsarina Catherine the Great. The company was formed by le Roy, a Frenchman, Pictet, a Swiss from Geneva, and Sonntag, a German. There were two other corporations active in the field of recruiting settlers to Russia, one formed by the Frenchman Baron Caneu de Beauregard with Major Otto Friedrich of Monjou and the other, with no independent funding, by Jean de Boffe, Meusnier de Precour, and Quentin Benjamin Coulhette d'Hautervive. To settlers wearied by wars and economic crises, Catherine promised freedom of religion, exemptions from taxes and military service, and the right to dispose of their land as they wished. Thousands of German craftsmen and farmers responded to these recruitment efforts and founded 103 German villages on both sides of the Volga; they are thus known as the Volga Germans. Le Roy and Pictet established 25 colonies comprising 1,530 fami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pic-Pic
Pic-Pic was a Swiss automobile manufactured in Geneva from 1906 to 1924. They were produced by the Piccard-Pictet Company (whence its name derives) until 1920, and by Gnome et Rhône from 1920 until the demise of the marque in 1924. History In the early 1900s, two brothers, Charles and Frederic Dufaux set about building their own race car. The design called for a straight-8 12-litre engine with about 80 horsepower. To produce the automotive vehicle, the two brothers contacted the Piccard-Pictet Company, which had the capability to manufacture such a vehicle. The elderly Paul Piccard did not think highly of the relatively new invention of the automotive vehicle. On the other hand, Lucien Pictet believed that cars had a bright future. This friction led to the founding of the Genevan Automotive Vehicle Society (G.A.V.S.) in 1905. This was a marketing company which contracted the Piccard-Pictet Company to manufacture automotive vehicles. In fact, the cars were known as S.A.G.s until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Pictet Group
The Pictet Group, known as Pictet, is a Swiss multinational private bank and financial services company founded in Switzerland. Headquartered in Geneva, it is one of the largest Swiss banks and primarily offers services in wealth management, asset management, and asset servicing, to private clients and institutions. The Pictet Group employs around 5,000 people, including 900 investment managers. It has a network of 30 offices in financial services centres, including registered banks in Geneva, Luxembourg, Nassau, Hong Kong and Singapore. Pictet does not engage in investment banking, nor does it extend commercial loans. According to its 2021 Annual Review, Pictet had CHF 698 Bn of assets under management or custody, with its total capital ratio significantly exceeding the levels demanded by Swiss regulators. Banque Pictet & Cie SA is rated Prime-1/Aa2 by Moody's, and F1+/AA- by Fitch. History Pictet traces its origin to the foundation of ''Banque De Candolle Mallet & Cie' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pictet–Spengler Reaction
The Pictet–Spengler reaction is a chemical reaction in which a β-arylethylamine undergoes condensation with an aldehyde or ketone followed by ring closure. The reaction was first discovered in 1911 by Amé Pictet and Theodor Spengler (February 22, 1886 - August 18, 1965). Traditionally an acidic catalyst in protic solvent was employed with heating, however the reaction has been shown to work in aprotic media in superior yields and sometimes without acid catalysis. The Pictet–Spengler reaction can be considered a special case of the Mannich reaction, which follows a similar reaction pathway. The driving force for this reaction is the electrophilicity of the iminium ion generated from the condensation of the aldehyde and amine under acid conditions. This explains the need for an acid catalyst in most cases, as the imine is not electrophilic enough for ring closure but the iminium ion is capable of undergoing the reaction. The Pictet-Spengler reaction is widespread in both ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pictet-Hubert Reaction
Phenanthridine is a nitrogen heterocyclic compound that is the basis of DNA-binding fluorescent dyes through intercalation. Examples of such dyes are ethidium bromide and propidium iodide. Acridine is an isomer of phenanthridine. Phenanthridine was discovered by Amé Pictet and H. J. Ankersmit in 1891 by pyrolysis of the condensation product of benzaldehyde and aniline. In the Pictet–Hubert reaction (1899) the compound is formed in a reaction of the 2-aminobiphenyl – formaldehyde adduct (an ''N''-acyl- ''o''-xenylamine) with zinc chloride at elevated temperatures. The reaction conditions for the Pictet–Hubert reaction were improved by Morgan and Walls in 1931, replacing the metal by phosphorus oxychloride and using nitrobenzene as a reaction solvent. For this reason, the reaction is also called the Morgan–Walls reaction.Jie Jack Li (ed.), 2004, ''Name Reactions in Heterocyclic Chemistry'', Wiley. : The reaction is similar to the Bischler–Napieralski reaction and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pictet-Gams Isoquinoline Synthesis
Isoquinoline is a heterocyclic aromatic organic compound. It is a structural isomer of quinoline. Isoquinoline and quinoline are benzopyridines, which are composed of a benzene ring fused to a pyridine ring. In a broader sense, the term isoquinoline is used to make reference to isoquinoline derivatives. 1-Benzylisoquinoline is the structural backbone in naturally occurring alkaloids including papaverine. The isoquinoline ring in these natural compound derives from the aromatic amino acid tyrosine. Properties Isoquinoline is a colorless hygroscopic liquid at temperatures above its melting point with a penetrating, unpleasant odor. Impure samples can appear brownish, as is typical for nitrogen heterocycles. It crystallizes in platelets that have a low solubility in water but dissolve well in ethanol, acetone, diethyl ether, carbon disulfide, and other common organic solvents. It is also soluble in dilute acids as the protonated derivative. Being an analog of pyridine, isoquinoline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raoul Pictet
Raoul-Pierre Pictet (4 April 1846 – 27 July 1929) was a Swiss physicist. Pictet is co-credited with French scientist Louis-Paul Cailletet as the first to produce liquid oxygen in 1877. Biography Pictet was born in Geneva. He served as professor in the university of that city. He devoted himself largely to problems involving the production of low temperatures and the liquefaction and solidification of gases.For biographical details, see On December 22, 1877, the Academy of Sciences in Paris received a telegram from Pictet in Geneva reading as follows: ''Oxygen liquefied to-day under 320 atmospheres and 140 degrees of cold by combined use of sulfurous and carbonic acid.'' This announcement was almost simultaneous with that of Cailletet who had liquefied oxygen by a completely different process. Pictet died in Paris in 1929. Works * * * ''Nouvelles machines frigorifiques basées sur l'emploi de phénomènes physicochimiques'' (1895) * ''Étude critique du matérialisme e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amé Pictet
Amé Pictet (July 12, 1857 – March 11, 1937) was a Swiss chemist. He discovered the Pictet–Spengler reaction, and the related Pictet–Hubert reaction and Pictet–Gams reaction. Pictet was born in Geneva, studied with August Kekulé at the University of Bonn where he received his Ph.D. in 1879. From 1894 until 1932 he was professor at the University of Geneva. He is credited with publishing the first synthesis of nicotine Nicotine is a natural product, naturally produced alkaloid in the nightshade family of plants (most predominantly in tobacco and ''Duboisia hopwoodii'') and is widely used recreational drug use, recreationally as a stimulant and anxiolytic. As .... References External links *Pictet Family Archives 1857 births 1937 deaths Swiss chemists Swiss Protestants University of Bonn alumni Academic staff of the University of Geneva Scientists from Geneva {{chemist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marc-Auguste Pictet
Marc-Auguste Pictet (; 23 July 1752 – 19 April 1825) was a Swiss scientific journalist and experimental natural philosopher. Pictet's main contribution to learning was his editing of the scientific section of the ''Bibliothèque Britannique'' (1796-1815), a publication devoted to the diffusion on the Continent of knowledge and arts produced in Great Britain. His own scientific research focused on the fields of physical science, especially calorimetry, but also astronomy, geology, meteorology and technology, especially chronometry and the manufacture of fine earthenware. Life He was born in Geneva, Republic of Geneva on 23 July 1752, the son of Charles Pictet, a military officer serving in the mercenary troops of the Netherlands, and his wife, Marie Dunant. Marc-Auguste studied natural philosophy and law at the Academy of Geneva and qualified as a lawyer in 1774. After one year in England (1775–76), he became assistant to Jacques-André Mallet at the Geneva Observato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
