Academic literature on the topic 'Metathetical reactions'

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Journal articles on the topic "Metathetical reactions"

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Marmo, J. C., and K. B. Wagener. "Metathetical Degradation and Depolymerization of Unsaturated Polymers." Rubber Chemistry and Technology 70, no. 3 (1997): 519–29. http://dx.doi.org/10.5254/1.3538439.

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Abstract The employment of transition metal catalysts has been a viable route in the degradation and depolymerization of unsaturated polymers. Initially, unsaturated polymers were degraded with a catalytic system containing a transition metal and a Lewis acid cocatalyst (WCl6/SnBu4). Degradation chemistry was effective in reducing the molecular weight of the polymer, however, the classical catalyst system induces side reactions which generates ill-defined products. These side reactions were obviated by using a preformed alkylidene without a Lewis acid cocatalyst, and perfectly difunctional tel
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Schädle, Dorothea, Markus Enders, Christoph Schädle, Cäcilia Maichle-Mössmer, Karl W. Törnroos, and Reiner Anwander. "Reactivity of halfsandwich rare-earth metal methylaluminates toward potassium (2,4,6-tri-tert-butylphenyl)amide and 1-adamantylamine." New Journal of Chemistry 39, no. 10 (2015): 7640–48. http://dx.doi.org/10.1039/c5nj00800j.

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Donor functionalities drastically affect salt-metathetical methylaluminato–amido exchange reactions in Cp<sup>R</sup>Ln(AlMe<sub>4</sub>)<sub>2</sub> by triggering methylaluminate cleavage and C–H bond activation of proximal aliphatic groups.
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Schwartz, J., S. L. Bernasek, G. Lu, J. P. Keegan, K. Purvis, and S. VanderKam. "Synthesis and ligand metathetical reactions of supported transesterification catalyst models." Journal of Molecular Catalysis A: Chemical 146, no. 1-2 (1999): 45–52. http://dx.doi.org/10.1016/s1381-1169(99)00079-5.

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Plakhotnyk, Andriy V., Lidiya D. Tarasova, Ludger Ernst, and Reinhard Schmutzler. "Metathetical Reactions in the System Na(K)PF6 - LiBF4 - Aprotic Media." Zeitschrift für anorganische und allgemeine Chemie 631, no. 10 (2005): 1840–42. http://dx.doi.org/10.1002/zaac.200500111.

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Puri, Jugal Kishore, and Rajni Chhoker. "Synthesis and Characterization of Metal Tribromoacetates and Their Alkali Metal Derivatives." Journal of Chemistry 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/392310.

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Complexes of composition Fe2Cl2(O2CCBr3)4, Fe2Cl(O2CCBr3)5, Fe (O2CCBr3)3, [(Me4N)2][Fe (O2CCBr3)4], K[Fe (O2CCBr3)4], Rb[Fe (O2CCBr3)4], Cs[Fe (O2CCBr3)4], [(Me4N)2][Co(O2CCBr3)4], [(Me4N)2][Mn(O2CCBr3)4], [(Me4N)2][Cu(O2CCBr3)4], and [(Me4N)2][Ni(O2CCBr3)4] have been prepared by metathetical reactions using nitromethane as solvent. All these compounds have been characterized by elemental analysis, molar conductance, infrared, reflectance and thermogravimetric studies.
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Vinklárek, Jaromír, Hana Paláčková та Jan Honzíček. "Experimental and Theoretical Study of the First Vanadocene(IV) Complexes of α-Amino Acids Prepared from Vanadocene Dichloride". Collection of Czechoslovak Chemical Communications 69, № 4 (2004): 811–21. http://dx.doi.org/10.1135/cccc20040811.

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The first bioinorganic vanadocene(IV) complexes of α-amino acids ([Cp2V(aa)]Cl, Cp = η5-C5H5, aa = glycine, L-alanine, L-valine) were prepared by reaction of vanadocene dichloride ([Cp2VCl2]) and α-amino acids in aqueous methanol. Analogous cationic complexes with PF6- counterions were obtained by metathetical reactions of the chloride precursors with KPF6. These compounds are of great interest as model systems for the vanadocene moiety binding to proteins. All complexes have been characterized by elemental analyses and IR, Raman and EPR spectroscopies. On the basis of EPR spectra, a chelate i
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Herberhold, Max, Thomas Triebner, and Tristram Chivers. "Arsenic(III) and Antimony(III) Thionylimides." Zeitschrift für Naturforschung B 46, no. 2 (1991): 169–74. http://dx.doi.org/10.1515/znb-1991-0208.

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The metathetical reactions of potassium thionylimide, KNSO, with arsenic and antimony halides in acetonitrile solution have been used to prepare two series of arsenic and antimony thionylimides, tBu3-nAs(NSO)n and tBu3-nSb(NSO)n, respectively, (n = 3, 2, 1). The tert-butyl- substituted compounds are moisture-sensitive oils. The half-sandwich hydrido-metal complexes CpM(CO)3H react with tBuAs(NSO)2 in THF solution to give the metallo-arsanes [Cp(CO)3M]As(tBu)(NSO) (M = Cr, M o, W).
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Roscales, Silvia, and Joaquín Plumet. "Ring Rearrangement Metathesis in 7-Oxabicyclo[2.2.1]heptene (7-Oxanorbornene) Derivatives. Some Applications in Natural Product Chemistry." Natural Product Communications 12, no. 5 (2017): 1934578X1701200. http://dx.doi.org/10.1177/1934578x1701200517.

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Metathesis reactions is firmly established as a valuable synthetic tool in organic chemistry, clearly comparable with the venerable Diels-Alder and Wittig reactions and, more recently, with the metal-catalyzed cross-coupling reactions. Metathesis reactions can be considered as a fascinating synthetic methodology, allowing different variants regarding substrate (alkene and alkyne metathesis) and type of metathetical reactions. On the other hand, tandem metathesis reactions such Ring Rearrangement Metathesis (RRM) and the coupling of metathesis reaction with other reactions of alkenes such as Di
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Vosloo, H. C. M., and J. A. K. du Plessis. "Influence of phenolic compounds on the Mo(CO)6 catalysed metathetical reactions of alkynes." Journal of Molecular Catalysis A: Chemical 133, no. 1-2 (1998): 205–11. http://dx.doi.org/10.1016/s1381-1169(98)00089-2.

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Hector, Andrew L., and Ivan P. Parkin. "Magnesium and Calcium Nitrides as Nitrogen Sources in Metathetical Reactions to Produce Metal Nitrides." Chemistry of Materials 7, no. 9 (1995): 1728–33. http://dx.doi.org/10.1021/cm00057a024.

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Dissertations / Theses on the topic "Metathetical reactions"

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Wu, Zhe Grubbs Robert H. "Transition metal carbenes : controlled ring-opening metathesis polymerizations and metathetical reactions with acyclic olefins /." Diss., Pasadena, Calif. : California Institute of Technology, 1994. http://resolver.caltech.edu/CaltechETD:etd-08162006-082323.

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Wu, Zhe. "Transition metal carbenes : controlled ring-opening metathesis polymerizations and metathetical reactions with acyclic olefins." Thesis, 1994. https://thesis.library.caltech.edu/3143/1/Wu_z_1994.pdf.

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Although strained cyclic olefins undergo facile ring-opening metathesis polymerization (ROMP) catalyzed by transition metal alkylidene or carbene complexes, there are few examples of living ROMP systems because the rate of the polymerization is much faster than that of the initiation. The phosphines reversibly bind to both the initial and the propagating tungsten or molybdenum alkylidene complexes, thus altering the rates of both initiation and the propagation. Due to the steric bulk difference of the propagating species and the initiating complexes, phosphines bind more strongly to the propag
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Kumar, Akshai A. S. "Reductive And Metathetic Coupling Reactions Mediated By Group (IV) Metal Alkoxides." Thesis, 2009. https://etd.iisc.ac.in/handle/2005/919.

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Several organic transformations are mediated by group(IV) metal alkoxides. The reactivity is based on the basic nature of alkoxide group, Lewis acidic nature of the group(IV) metals, insertion of unsaturated molecules into the M-OR bond and the reduction of M(OR)4 to low valent species. The thesis deals with insertion reactions and the reductive and metathetic coupling reactions mediated by group(IV) metal alkoxides. Titanium(IV) alkoxides and zirconium(IV) alkoxides promote insertion and metathesis of aryl isocyanates. It was observed that aryl isocyanates underwent double insertion in addi
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Kumar, Akshai A. S. "Reductive And Metathetic Coupling Reactions Mediated By Group (IV) Metal Alkoxides." Thesis, 2009. http://hdl.handle.net/2005/919.

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Several organic transformations are mediated by group(IV) metal alkoxides. The reactivity is based on the basic nature of alkoxide group, Lewis acidic nature of the group(IV) metals, insertion of unsaturated molecules into the M-OR bond and the reduction of M(OR)4 to low valent species. The thesis deals with insertion reactions and the reductive and metathetic coupling reactions mediated by group(IV) metal alkoxides. Titanium(IV) alkoxides and zirconium(IV) alkoxides promote insertion and metathesis of aryl isocyanates. It was observed that aryl isocyanates underwent double insertion in addit
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Book chapters on the topic "Metathetical reactions"

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Mews, R. "From Metathetical Reactions (Halogen-Halogen Exchange)." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145173.ch106.

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Clark, J. H. "From Metathetical Reactions (Anion-Halide Exchange)." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch50.

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Suzuki, H., and T. Ikegami. "By Metathetical Reactions." In Compounds of Groups 15 (As, Sb, Bi) and Silicon Compounds. Georg Thieme Verlag KG, 2002. http://dx.doi.org/10.1055/sos-sd-004-00157.

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Bernasek, S. L., J. Schwartz, A. B. Bocarsly, G. Lu, K. Purvis, and S. Vanderkam. "SYNTHESIS AND LIGAND METATHETICAL REACTIONS OF SURFACE-BOUND ORGANOMETALLIC INTERFACES." In Fundamental and Applied Aspects of Chemically Modified Surfaces. Elsevier, 1999. http://dx.doi.org/10.1533/9781845698591.341.

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"Artificial Scheelite CaWO4 by a Microwave-Assisted Solid-State Metathetic Reaction." In Synthesis, Properties and Mineralogy of Important Inorganic Materials. John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9780470976012.ch15.

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