Cross-Metathesis
Investigations into the selectivity of olefin cross metathesis using ruthenium alkylidene catalysts: electronic and steric matching of substrates
... In conclusion, the use of olefin cross-metathesis has started garnering attention as a viable tool in organic synthesis. Many fundamental studies on the functional group tolerance, electronic factors, and ...
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Citrus oils as chain transfer agents in the cross metathesis degradation of polybutadiene in block copolymers using Ru alkylidene catalysts
... The cross-metathesis degradation of copolymers is accompanied by the intramolecular cycli- zation reactions of butadiene units to form the cyclic trimers trans,trans,trans-1,5,9-cyclododecatriene as the ...
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Highly efficient conversion of plant oil to bio-aviation fuel and valuable chemicals by combination of enzymatic transesterification, olefin cross-metathesis, and hydrotreating
... olefin cross-metathesis, and ...olefin cross-metathesis then transformed the oleic acid methyl ester (OAME) into 1-decene and 1-decenoic acid methyl ester ...
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A Sustainable Preparation of Functional Perylenophanes by Domino Metathesis
... double cross metathesis in yields until 69% of isolated ...first metathesis by means of the second-generation Hoveyda-Grubbs-catalyst brings the remaining reactive olefinic groups close together ...
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11C Labeling of the C(1) C(10) Dihydroxy Acid Moiety for the Study on the Synthesis of Kulokekahilide 2 PET Tracer
... the cross-coupling reactions of [ 11 C]methyl iodide and the stannyl or boron substrates [11] ...rapid cross-coupling reactions have successfully been applied for the syntheses of various disease-oriented ...
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Nonlinear Polymeric Architectures via Olefin Metathesis
... upon cross metathesis (Scheme ...poor metathesis reactivity of the aryl acrylate ...olefin metathesis efficiently even with the highly active NHC- ...their metathesis reactivity. The ...
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The influence of structure on reactivity in alkene metathesis
... initial cross-metathesis at the desired ...faster metathesis than the analogous substrate with an allylic methyl group, it is not possible to infer the rate difference between the simplest ...
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Sodium template synthesis of a 54 membered bis(pyridine) macrocycle
... applications nitrogen-based precursors, such as bipyridine-, phenanthroline-, and bis(imino)pyridine-based ligands, are generally preferred. Mixed nitrogen-oxygen donor ligands, such as ...
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Index Catalog // Carolina Digital Repository
... the cross-metathesis, resulting in reaction of the C16-C17 olefin and dimerization of the C9-C12 coupling ...3.25. Cross metathesis of terminal alkene ...the cross-metathesis of ...
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Synthesis of porphyryl boronates with (un)saturated side chains
... a cross–metathesis approach in the presence of Grubbs I-generation ...formal cross–metathesis products with α,β–unsaturated chains smoothly underwent addition with bis(pinacolato)diboron [(Me ...
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Synthesis of tsetse fly attractants from a cashew nut shell extract by isomerising metathesis
... olefin cross-metathesis enabled the synthesis of the tsetse fly attractants 3-ethylphenol (2) and 3-propylphenol (3) from an anacardic acid mixture (1) extracted from cashew nut ...
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Application of self-metathesis in the synthesis of Bis-tetrahydrofurans, 1-6-dioxaspiro[4.5] decane spiroketal, ritonavir and lopinavir core unit using C2-symmetric approach and synthesis of 8-methoxygoniodiol
... It describes the “Stereoselective synthesis of bis-hydroxy tetrahydrofurans using cross-metathesis”. The annonaceous acetogenins are a family of almost 400 natural products, which have been found in 37 ...
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METATHESIS BASED APPROACHES FOR THE SYNTHESIS OF AMINOCYCLITOL MOIETIES OF TREHAZOLIN AND TREHALOSTATIN ISOASPINONENE, LEIOCARPIN C AND (+) GONIODIOL
... the cross-metathesis of olefin 18 with allylic alcohol 19a. Compound 19a could be obtained by vinylation of ketone 20a. For accessing cyclic ketone 20a, two synthetic routes namely ‘asymmetric approach’ ...
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... and cross-metathesis of the chicle gum rubber isolated from the gummy latex of sapodilla (Manilkara zapota) with orange oil, β -pinene and, methyl methacrylate using the Ru-alkylidenes Hoveyda-Grubbs and ...
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New Metal-NHC Complexes: Synthesis, Characterization, and Uses
... The mixture was vigorously stirred at room temperature, the appearance of product 1 was followed by 31 P NMR. Both solvents showed the reaction to proceed in nearly identical reaction times, with completion of the ...
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Studies Towards the total synthesis of (-)-Hennoxazole A, Passifloricin A, (+)-Cryptocarya Diacetate, and Davanones
... a cross-metathesis reaction with the allylic acetate II in the presence of Grubbs’ 2nd generation catalyst in refluxing DCM to furnish the desired cross-coupled product 62 (78%, based on conversion ...
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Interlocked Molecules Using Olefin Metathesis
... olefin metathesis has been applied to the synthesis of small molecule and polymeric ...through cross metathesis ...iterative cross metathesis process termed acyclic diene ...
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New Frontiers in Metathesis Chemistry69-75
... ruthenium-based metathesis chemistry to a variety of initiating sys- tems of fundamental relevance in ...and metathesis reactions were described, along with applications of metathesis for the ...
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A Sociolinguistic Analysis of Metathesis in Azeri Language
... Speaker age is considered the primary correlate of language change (Chambers 2002), and as such is generally included as independent variable in studies of language change. However, in contrast with other social ...
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Alkane metathesis via tandem catalysis
... supported 4 (2.5 µmol of Ir on 310 mg of alumina) in n-decane (5130 equiv relative to Ir) and heating at 175 °C. AM activity was low with only 120 TOs seen after 4 days (Table 5.6, entry 1). Remarkably, when the ...
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