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C Bond Cleavage (c + bond_cleavage)
Selected AbstractsChemInform Abstract: Substrate-Controlled Selective Proximal and Distal C,C Bond Cleavage via Lewis Acid Mediated O-Acylation of 2-(Arylmethylene)cyclopropylaldehyde: A Stereoselective Synthesis of Bifunctional Methylenecyclobutanes and 1,3-Conjugated Dienes.CHEMINFORM, Issue 3 2009Xian Huang Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Mild C,C Bond Cleavage in Cycloalkanes by the Action of New Lanthanide Catalysts LnCl3×3H2O×3(EtO)2AlOH.CHEMINFORM, Issue 52 2008R. G. Bulgakov Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] Novel C,C Bond Cleavage from Arylacetonitriles in Alcohols to Aryl Carboxylic Esters Using Potassium Iodide and Catalytic Amount of Samarium.CHEMINFORM, Issue 10 2007Mingxin Yu Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] N-Heterocyclic Carbene Catalyzed C,C Bond Cleavage in Redox Esterifications of Chiral Formylcyclopropanes.CHEMINFORM, Issue 52 2006Stephanie S. Sohn Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source] Ru- and Rh-Catalyzed C,C Bond Cleavage of Cyclobutenones: Reconstructive and Selective Synthesis of 2-Pyranones, Cyclopentenes, and Cyclohexenones.CHEMINFORM, Issue 6 2005Teruyuki Kondo Abstract For Abstract see ChemInform Abstract in Full Text. [source] ChemInform Abstract: Palladium-Catalyzed Coupling Reactions of Biphenylene with Olefins, Arylboronic Acids, and Ketones Involving C,C Bond Cleavage.CHEMINFORM, Issue 41 2001Tetsuya Satoh Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] Treating [K4(H2O)0.5][SnTe4] with PPh4+ or AsPh4+: Formation of a Highly Air-Stable Tellurostannate Salt, a Tellurolate with One-Coordinate Te Atoms, and a Polytelluride Salt with ,1[Te4(H2O)2]2, Chains,EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 28 2007Eugen Ruzin Abstract In reactions of potassium orthotellurostannates with EPh4Cl (E = P, As), different single-crystalline products are obtained. An air-stable dimeric tellurostannate forms by partial replacement of strongly interacting K+ cations by weakly interacting or noninteracting [PPh4]+ ions. For E = As, an equally air-stable tellurophenolate, in which Te has the rare coordination number 1, results upon As,C bond cleavage at a tetraphenylarsonium cation. Oxidation of the air-sensitive [Sn2Te6]4, anion and Te2, by O2 (air) affords a tetratelluride salt with strands of H2O-bridged [Te4]2, anions. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source] Direct observation of deuterium migration in crystalline-state reaction by single-crystal neutron diffraction.ACTA CRYSTALLOGRAPHICA SECTION B, Issue 4 2001The H atoms bonded to the chiral C atoms (stereogenic center) of the 1-cyanoethyl groups in two cobalt complexes, [(R)-1-cyanoethyl]bis(dimethylglyoximato)(pyridine)cobalt(III) (2) and [(R,S)-1-cyanoethyl]bis(dimethylglyoximato)(piperidine)cobalt(III) (3), were replaced with D atoms, such as Co,C*D(CH3)CN. The crystals of the two cobalt complexes were irradiated with a xenon lamp for 72,h and 27,d, respectively. The unit-cell dimensions were gradually changed with retention of the single-crystal form. The crystal structures after irradiation were determined by neutron diffraction. In each crystal the chiral 1-cyanoethyl group of one of the two crystallographically independent molecules was partly inverted to the opposite configuration, whereas that of the other molecule kept the original configuration. The C*,D bond in the inverted group was completely conserved in the process of the inversion of the chiral alkyl group. This suggests that the inversion of the chiral 1-cyanoethyl group proceeds with the rotation of the cyanoethyl radical after the Co,C bond cleavage by photo-irradiation so that the opposite side of the radical faces the Co atom. This is followed by recombination of the Co,C bond to form the inverted 1-cyanoethyl group. [source] | ||||||||||