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Alkene Carboamination
Alkene carboamination is the simultaneous formation of C–N and C–C bonds across an alkene. This method represents a powerful strategy to build molecular complexity with up to two stereocenters in a single operation. Generally, there are four categories of reaction modes for alkene carboamination. The first class is cyclization reactions, which will form a N-heterocycle as a result. The second class has been well established in the last decade. Alkene substrates with a tethered nitrogen nucleophile have been used in these transformations to promote intramolecular aminocyclization. While intermolecular carboamination is extremely hard, people have developed a strategy to combine the nitrogen and carbon part, which is known as the third class. The most general carboamination, which takes three individual parts and couples them together is still underdeveloped. Reaction mechanisms Different transition metals have been used to catalyze carboamination reactions, including palladium, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Untitled Angew-7
Untitled or (Untitled) may refer to: Artworks * ''Untitled (2004)'', by Banksy * ''Untitled'' (1982 painting), by American artist Jean-Michel Basquiat * ''Untitled'' (Devil), a 1982 painting by American artist Jean-Michel Basquiat * ''Untitled'' (Fishing), a 1981 painting by American artist Jean-Michel Basquiat * ''Untitled'' (1981 Head), a 1981 painting by American artist Jean-Michel Basquiat * ''Untitled (The Birth)'', a 1938 tempera painting by American artist Jacob Lawrence * ''Untitled (Black on Grey)'', a 1970 painting by Mark Rothko * ''Untitled'' (Hoosier mural), a 1972 outdoor mural by Peter Mayer * ''Untitled'' (IUPUI Letters), a 2008 public sculpture the New York City firm Two Twelve * ''Untitled (Jazz Musicians)'', a 1995 outdoor sculpture by John Spaulding * ''Untitled'' (Jeffersonville), a 1970 public artwork by Barney Bright * ''Untitled (landscape)'', an 1883–1911 drawing by Carl Fredrik Hill * ''Untitled (L's)'', a 1980 public sculpture by David Von Schlege ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaloid
Alkaloids are a class of basic BASIC (Beginners' All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages designed for ease of use. The original version was created by John G. Kemeny and Thomas E. Kurtz at Dartmouth College ..., natural product, naturally occurring organic compounds that contain at least one nitrogen atom. This group also includes some related compounds with neutral and even weakly acidic properties. Some synthetic compounds of similar structure may also be termed alkaloids. In addition to carbon, hydrogen and nitrogen, alkaloids may also contain oxygen, sulfur and, more rarely, other elements such as chlorine, bromine, and phosphorus.Chemical Encyclopedia: alkaloids xumuk.ru Alkaloids are produced by a large variety of organisms includi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrrolidine
Pyrrolidine, also known as tetrahydropyrrole, is an organic compound with the molecular formula (CH2)4NH. It is a cyclic secondary amine, also classified as a saturated heterocycle. It is a colourless liquid that is miscible with water and most organic solvents. It has a characteristic odor that has been described as "ammoniacal, fishy, shellfish-like". In addition to pyrrolidine itself, many substituted pyrrolidines are known. Production and synthesis Industrial production Pyrrolidine is prepared industrially by the reaction of 1,4-butanediol and ammonia at a temperature of 165–200 °C and a pressure of 17–21 MPa in the presence of a cobalt- and nickel oxide catalyst, which is supported on alumina. : The reaction is carried out in the liquid phase in a continuous tube- or tube bundle reactor, which is operated in the cycle gas method. The catalyst is arranged as a fixed-bed and the conversion is carried out in the downflow mode. The product is obtained after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CARBO2
Carbo or accented Carbó may refer to Places *Carbó Municipality, a municipality in Sonora, Mexico **Carbó, the municipal seat of Carbó Municipality, Sonora, Mexico *Enrique Carbó, Argentina, a village and municipality in Entre Ríos Province, Argentina *Pedro Carbo Canton, a canton in Guayas Province, Ecuador **Pedro Carbo, the municipal seat of Pedro Carbo Canton People In Ancient Rome *Papirius Carbo, an ancient Roman family *Gaius Papirius Carbo (consul 120 BC) ( 163–119 BC), Roman statesman and orator Contemporary *Agustín Carbó, Puerto Rican energy and environmental attorney *Bernie Carbo (born 1947), American Major League baseball player *Chuck Carbo (1926–2008), American R&B singer *Frankie Carbo (1904–1976), New York City Mafia soldier in the Lucchese crime family *Juan José Carbó (1927–2010), Spanish cartoonist *Nick DeCarbo (1910–1991), American football player *Raúl Baca Carbo (1931–2014), Ecuadorian engineer and politician *Victoria Carbó (born 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forrest Michael
Forrest may refer to: Places Australia *Forrest, Australian Capital Territory *Forrest, Victoria, a small rural township *Division of Forrest, a federal division of the Australian House of Representatives, in Western Australia *Electoral district of Forrest, Western Australia, an electoral district from 1904 to 1950 *Forrest Land District, Western Australia, a cadastral division *Forrest, Western Australia, a small settlement and railway station **Forrest Airport *Forrest River, Western Australia *Forrest Highway, Western Australia United States *Forrest, Illinois, a village *Forrest City, Arkansas *Forrest Township, Livingston County, Illinois *Forrest County, Mississippi *Camp Forrest, an American World War II training base in Tullahoma, Tennessee Elsewhere *Forrest Pass, Marie Byrd Land, Antarctica *Forrest, Manitoba, Canada, a small town *Forrest Road, a street in Edinburgh, Scotland People and fictional characters *Forrest (surname) *Forrest (given name) *Forrest (singer), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkene
In organic chemistry, an alkene is a hydrocarbon containing a carbon–carbon double bond. Alkene is often used as synonym of olefin, that is, any hydrocarbon containing one or more double bonds.H. Stephen Stoker (2015): General, Organic, and Biological Chemistry'. 1232 pages. Two general types of monoalkenes are distinguished: terminal and internal. Also called α-olefins, terminal alkenes are more useful. However, the International Union of Pure and Applied Chemistry (IUPAC) recommends using the name "alkene" only for acyclic hydrocarbons with just one double bond; alkadiene, alkatriene, etc., or polyene for acyclic hydrocarbons with two or more double bonds; cycloalkene, cycloalkadiene, etc. for cyclic ones; and "olefin" for the general class – cyclic or acyclic, with one or more double bonds. Acyclic alkenes, with only one double bond and no other functional groups (also known as mono-enes) form a homologous series of hydrocarbons with the general formula wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John P
John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second Epistle of John, often shortened to 2 John * Third Epistle of John, often shortened to 3 John People * John the Baptist (died c. AD 30), regarded as a prophet and the forerunner of Jesus Christ * John the Apostle (lived c. AD 30), one of the twelve apostles of Jesus * John the Evangelist, assigned author of the Fourth Gospel, once identified with the Apostle * John of Patmos, also known as John the Divine or John the Revelator, the author of the Book of Revelation, once identified with the Apostle * John the Presbyter, a figure either identified with or distinguished from the Apostle, the Evangelist and John of Patmos Other people with the given name Religious figures * John, father of Andrew the Apostle and Saint Peter * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
