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Knorr Bresme , an intramolecular o ...
Knorr may refer to: * Knorr (surname) *Knorr (brand), a brand of foods and beverages, particularly known for dehydrated broth * Knorr-Bremse, manufacturer of braking systems for rail and commercial vehicles * R/V ''Knorr'', the ship used to find the wreck of the ''Titanic'' * Knorr Arena, in Heilbronn, Germany *Knorr, older spelling of Knarr, a type of Viking cargo ship *Koenigs–Knorr reaction, the substitution reaction of a glycosyl halide with an alcohol to give a glycoside * Knorr pyrrole synthesis, a widely used chemical reaction that synthesizes substituted pyrroles *Paal–Knorr synthesis, a reaction that generates either furans, pyrroles, or thiophenes from 1,4-diketones *Knorr quinoline synthesis The Knorr quinoline synthesis is an Intramolecular reaction, intramolecular organic reaction converting a anilide, β-ketoanilide to a 2-hydroxyquinoline using sulfuric acid. This reaction was first described by Ludwig Knorr (1859–1921) in 1886 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knorr (surname)
Knorr is a surname. Notable people with the surname include: *Brian Knorr (born 1963), American football coach *Carl Heinrich Theodor Knorr (1800–1875), German businessman and founder of the company Knorr. *Christian Knorr von Rosenroth (1636–1689), Christian Hebraist *Eduard von Knorr (1840–1920), German admiral *Ernst-Lothar von Knorr (1896–1973), German composer *Frances Knorr (1868–1894), English-Australian baby farmer and murderer *Fred Knorr (1913–1960), American radio executive *Georg Knorr (1859–1911), engineer and entrepreneur in railroad technology *Georg Wolfgang Knorr (1705–1761) German natural history illustrator from Nürnberg *Hugo Knorr (1834–1904), German painter *Iwan Knorr (1853–1916), German teacher of music * Johnny Knorr (1921–2011), American musician and big band leader *Karen Knorr, American photographer *Karin Knorr Cetina (born 1944), Austrian sociologist *Ludwig Knorr (1859–1921), German chemist *Martin J. Knorr (1906–1989), New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knorr (brand)
Knorr (, , ) is a German food and beverage brand. It has been owned by the British company Unilever since 2000, when Unilever acquired Best Foods, excluding Japan, where it is made under licence by Ajinomoto. It produces dehydrated soup and meal mixes, bouillon cubes and condiments. It was known as Royco in Indonesia, Kenya, and the Netherlands, and as Continental in Australia and New Zealand. Knorr is also produced in India and Pakistan. History Knorr was founded in 1838 by Carl Heinrich Theodor Knorr (1800–1875). Knorr headquarters are in Heilbronn, Germany. Products previously sold under the Lipton brand are now being absorbed into the Knorr product line. With annual sales topping €3 billion, Knorr is Unilever's biggest selling brand. An Israeli company, based in Haifa, Israel Edible Products, produces kosher soups for Knorr that are sold in Israel and the United States. Bouillon cubes In 1912, the first Knorr bouillon cube was introduced. Carl Heinrich Knor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knorr-Bremse
Knorr-Bremse AG is a German manufacturer of braking systems for rail and commercial vehicles that has operated in the field for over 110 years. Other products in Group's portfolio include intelligent door systems, control components, air conditioning systems for rail vehicles, torsional vibration dampers, and transmission control systems for commercial vehicles. In 2019, the Group's workforce of over 28,000 achieved worldwide sales of EUR 6.93 billion. The Group has a presence in over 30 countries, at 100 locations. On 4 November 2020, it was announced that Knorr-Bremse AG had chosen Dr. Jan Michael Mrosik to be a member of the Executive Board and CEO. The appointment takes effect as of 1 January 2021. History Foundation Engineer Georg Knorr established ''Knorr-Bremse GmbH'' in 1905 in Boxhagen-Rummelsburg, Neue Bahnhofstraße, near Berlin (since 1920 part of Berlin- Friedrichshain). Its production of railway braking systems derived from a company ("Carpenter & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RV Knorr
RV ''Knorr'' was a research vessel formerly owned by the U.S. Navy and operated by the Woods Hole Oceanographic Institution for the U.S. research community in coordination with and as a part of the University-National Oceanographic Laboratory System (UNOLS) fleet. On March 14, 2016, ''Knorr'' was officially transferred to the Mexican Navy and renamed '' Rio Tecolutla''. She was replaced at Woods Hole by the . ''Knorr'' is best known as the ship that supported researchers as they discovered the wreck of the RMS ''Titanic'' in 1985. R/V ''Knorr'' (AGOR-15) has traveled more than a million miles—the rough equivalent of two round trips to the Moon or forty trips around the Earth. Her sister ship is the RV ''Melville''. Ship R/V ''Knorr'' was named in honor of Ernest R. Knorr, a distinguished hydrographic engineer and cartographer who was appointed Chief Engineer Cartographer of the U.S. Navy Hydrographic office in 1860. Chief Engineer Knorr was one of the leaders of the Navy’s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knorr Arena
Kolbenschmidt Arena is an arena in Heilbronn Heilbronn () is a List of cities and towns in Germany, city in northern Baden-Württemberg, Germany, surrounded by Heilbronn (district), Heilbronn District. With over 126,000 residents, it is the sixth-largest city in the state. From the late Mid ..., Germany. It is primarily used for hockey. Kolbenschmidt Arena opened in 2002 and has a viewer capacity of 4,000. External links * Indoor arenas in Germany Indoor ice hockey venues in Germany Buildings and structures in Heilbronn Sports venues in Baden-Württemberg {{BadenWürttemberg-struct-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knarr
A knarr is a type of Norse merchant ship used by the Vikings. The knarr ( non, knǫrr, plural ) was constructed using the same clinker-built method as longships, karves, and faerings. History ''Knarr'' is the Old Norse term for a type of ship built for long sea voyages and used during the Viking expansion. The knarr was a cargo ship; the hull was wider, deeper and shorter than a longship, and could take more cargo and be operated by smaller crews. They were built with a length of about , a beam of , and a hull capable of carrying up to 24 tons. by Peter Hayes Sawyer It was primarily used to transport trading goods like walrus |
Koenigs–Knorr Reaction
The Koenigs–Knorr reaction in organic chemistry is the substitution reaction of a glycosyl halide with an alcohol to give a glycoside. It is one of the oldest glycosylation reactions. It is named after Wilhelm Koenigs (1851–1906), a student of von Baeyer and fellow student with Hermann Emil Fischer, and Edward Knorr, a student of Koenigs. In its original form, Koenigs and Knorr treated ''acetobromoglucose'' with alcohols in the presence of silver carbonate. Shortly afterwards Fischer and Armstrong reported very similar findings. In the above example, the stereochemical outcome is determined by the presence of the neighboring group at C2 that lends anchimeric assistance, resulting in the formation of a 1,2-trans stereochemical arrangement. Esters (e.g. acetyl, benzoyl, pivalyl) generally provide good anchimeric assistance, whereas ethers (e.g. benzyl, methyl etc.) do not, leading to mixtures of stereoisomers. Mechanism In the first step of the mechanism, the glycosyl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knorr Pyrrole Synthesis
The Knorr pyrrole synthesis is a widely used chemical reaction that synthesizes substituted pyrroles (3). The method involves the reaction of an α-amino-ketone (1) and a compound containing an electron-withdrawing group (e.g. an ester as shown) α to a carbonyl group (2). Method The mechanism requires zinc and acetic acid as catalysts. It will proceed at room temperature. Because α-amino-ketones self-condense very easily, they must be prepared ''in situ''. The usual way of doing this is from the relevant oxime, via the Neber rearrangement. The original Knorr synthesis employed two equivalents of ethyl acetoacetate, one of which was converted to ethyl 2-oximinoacetoacetate by dissolving it in glacial acetic acid, and slowly adding one equivalent of saturated aqueous sodium nitrite, under external cooling. Zinc dust was then stirred in, reducing the oxime group to the amine. This reduction consumes two equivalents of zinc and four equivalents of acetic acid. Modern practice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paal–Knorr Synthesis
The Paal–Knorr Synthesis in organic chemistry is a reaction that generates either furans, pyrroles, or thiophenes from 1,4-diketones. It is a synthetically valuable method for obtaining substituted furans and pyrroles, common structural components of many natural products. It was initially reported independently by German chemists Carl Paal and Ludwig Knorr in 1884 as a method for the preparation of furans, and has been adapted for pyrroles and thiophenes. Although the Paal–Knorr synthesis has seen widespread use, the mechanism wasn't fully understood until it was elucidated by V. Amarnath ''et al.'' in the 1990s. The furan synthesis requires an acid catalyst: : In the pyrrole synthesis a primary amine participates: : and in that of thiophene for instance the compound phosphorus pentasulfide: : Mechanisms Furan synthesis The acid catalyzed furan synthesis proceeds by protonation of one carbonyl which is attacked by the forming enol of the other carbonyl. Dehydration of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
