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A Fischer carbene is a type of transition metal carbene complex, which is an organometallic compound containing a divalent organic ligand. In a Fischer carbene, the carbene ligand is a σ-donor π-acceptor ligand. Because π-backdonation from the metal centre is generally weak, the carbene carbon is electrophilic.
Fischer carbenes are named for Ernst Otto Fischer.
Fischercarbene is a type of transition metal carbene complex, which is an organometallic compound containing a divalent organic ligand. In a Fischer...
fine chemicals. Metal carbene complexes are often classified into two types. The Fischercarbenes, named after Ernst Otto Fischer, feature strong π-acceptors...
In organic chemistry, a carbene is a molecule containing a neutral carbon atom with a valence of two and two unshared valence electrons. The general formula...
Carbene radicals are a special class of organometallic carbenes. The carbene radical can be formed by one-electron reduction of Fischer-type carbenes...
[(CH3)3O]+[BF4]− to form (R−)(CH3O−)C=Cr(CO)5, where R stands for alkyl, to give Fischercarbene complexes: Treatment of chromium hexacarbonyl with sodium cyclopentadienide...
metal alkylidene and alkylidyne complexes, since referred to as Fischercarbenes and Fischer-carbynes. Overall he published about 450 journal articles and...
persistent carbene (also known as stable carbene) is an organic molecule whose natural resonance structure has a carbon atom with incomplete octet (a carbene),...
the basicity of the oxygen center. O-alkylation of metal acyls gives Fischercarbene complexes. The common names of acyl groups are derived typically by...
; Wulff, W. D. (2008). "The Synthesis of Phenols and Quinones via FischerCarbene Complexes". Organic Reactions. 70 (2): 121–623. doi:10.1002/0471264180...
Ph(OCH3)C=Cr(CO)5 was the first carbene complex to be crystallographically characterized by Fischer in 1967 (now called a Fischercarbene). The first ever carbyne...
precursors for carbenes by loss of a molecule of dinitrogen. For example, irradiation of diazirines with ultraviolet light leads to carbene insertion into...
O-Alkylation of these anions, such as with Meerwein salts, affords Fischercarbenes. Despite being in low formal oxidation states, metal carbonyls are...
chromium allows for the reaction to occur as a facile reaction. A Fischercarbene can undergo nucleophilic abstraction where a methyl group is removed...
studying the mechanism for the Wulff-Dotz benzannulation reaction between Fischercarbene complexes. and alkynes. Walters graduated from Chicago in 1997 with...
Fischer, H. (2000). "Novel hepta-coordinated molybdenum(II) and tungsten(II) carbene complexes by oxidative decarbonylation of Mo(0) and W(0) carbene...
1021/jo00890a018. Fischer, C.; Smith, S. W.; Powell, D. A.; Fu, G. C. (2006). "Umpolung of Michael Acceptors Catalyzed by N-Heterocyclic Carbenes". Journal of...
organolithium reagents to give anionic acyls which can be O-alkylated to give Fischercarbenes. Mo(CO)6 reacts with arenes to give piano-stool complexes such as...
reactive that it is not encountered in everyday life. It is classified as a carbene, cumulene and an oxocarbon. Dicarbon monoxide is a product of the photolysis...
of this series is methylidenecarbene. With the formula :C=CH2), it is a carbene. In IUPAC nomenclature, 1,1-ethenediyl describes the connectivity >C=CH2...
N-heterocyclic carbenes (NHCs). cyclopentadienyl ligands. various arenes and dienes carbon monoxide. hydride, notably in the Shvo catalyst. metal carbenes, notably...
hydrolysis of trichloromethyl aryl ketimines (RC(CCl3)=NH) in the Houben-Fischer synthesis Nitriles can be obtained from primary amines via oxidation. Common...
organoberyllium carbene consists of a carbene attached to beryllium. The types of carbene includes a N-heterocyclic carbenes (NHC) and cyclic alkyl amino carbenes (CAAC)...
compounds with the general formula :GeR2. They are heavier carbene analogs. However, unlike carbenes, whose ground state can be either singlet or triplet depending...
cytochromes P450. His work has led to the discovery of a new class of carbene and nitrene iron complexes and of one of the first catalytic systems of...
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