Anagram & Information om | Engelska ordet CARBENES

Exempel på hur man kan använda CARBENES i en mening

• In the 1960s his group discovered a metal alkylidene and alkylidyne complexes, since referred to as Fischer carbenes and Fischer-carbynes.
• Unlike carbenes, which can exist in the singlet or triplet state, silylene (and all of its derivatives) are singlets.
• Reactive intermediates based on carbon are radicals, carbenes, carbocations, carbanions, arynes, and carbynes.
• He found new methods for the synthesis of pyrylium salts (Balaban–Nenitzescu–Praill synthesis), of carbenes, tryptamine, serotonin, two new syntheses for the indole nucleus, and a new method of polymerisation of ethylene.
• The best-known examples and by far largest subgroup are the N-heterocyclic carbenes (NHC) (sometimes called Arduengo carbenes), in which nitrogen atoms flank the formal carbene.
• Other important diradicals are certain carbenes, nitrenes, and their main-group elemental analogues.
• It condenses with ketones and aldehydes to form hydrazones, which can be further transformed into reactive intermediates such as diazo compounds or carbenes.
• However, the high ring strain present in cyclopropanes makes them challenging to produce and generally requires the use of highly reactive species, such as carbenes, ylids and carbanions.
• As opposed to the now ubiquitous NHC (N-heterocyclic carbene) systems based on imidazole rings, these carbenes are structured from triazole rings.
• APC catalyzes many organic reactions, such as cross-coupling, nucleophilic addition to dienes, and decomposition of diazo compounds to reactive carbenes.
• Nitrenium ions are isoelectronic with carbenes, and can exist in either a singlet or a triplet state.
• Skell, sometimes called "the father of carbene chemistry," is widely known for the "Skell Rule," which was first applied to carbenes, the "fleeting species" of carbon.
• The discovery of the Nef reaction and the papers about divalent carbon (carbenes) were his major achievements.
• Many kinds of donor groups have been incorporated into the arms of tripodal ligands, including amido , and N-heterocyclic carbenes.
• The cyclic(alkyl)(amino)carbenes (CAACs) has already been known as both a better donor and better acceptor than n-heterocyclic carbenes (NHCs) due to its higher highest occupied molecular orbital (HOMO) and lower lowest unoccupied molecular orbital (LUMO).
• The research interests of Bertrand and his co-workers lie mainly in the chemistry of with main group elements from group 13 to 16, at the border between organic, organometallic and inorganic chemistry; especially their use in stabilizing carbenes, nitrenes, phosphinidenes, radicals and biradicals, 1,3-dipoles, anti-aromatic heterocycles, and more.
• Michael Denk's research ranges over several areas of organic and inorganic chemistry, including carbenes and their analogs, carbenium salts, silicon, germanium, and tin chemistry, volatile metal complexes, inorganic photochemistry, ionic liquids, and more; as well as applications such as chemical vapor deposition processes, semiconductors, thin films, etc.
• Phosphinidenes (IUPAC: phosphanylidenes, formerly phosphinediyls) are low-valent phosphorus compounds analogous to carbenes and nitrenes, having the general structure RP.
• It reacts with organolithium reagents to give anionic acyls which can be O-alkylated to give Fischer carbenes.
• Evidence for the formation of copper carbenes is provided by comparison to the behavior of photolytically generated free carbenes and the observation of appreciable enantioselectivity in cyclopropanations with chiral copper complexes.

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