LES ALCYNES PDF

Interactions des alcynes avec les complexes carbéniques du tungstène portant une double liaison carbone— carbone: Accès aux dérivés bicyclo[4,1,0]. Download Citation on ResearchGate | Réaction des halogenures de titane(IV) avec les alcynes: Formation d’halogénoalcènes | The behaviour of some mono-. Download Citation on ResearchGate | Action du chlorure de fer(III) sur les alcynes: Reduction du fer(III) en fer(II) et formation d’un chloro-alcene | The behaviour.

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Catalysis, Ruthenium, Diazo compounds, Carbene, Alkynes. You may thus request that your data, should it be inaccurate, incomplete, unclear, outdated, not be used or stored, be corrected, clarified, updated or deleted.

The owners of this website hereby guarantee to respect the legal confidentiality conditions, applicable in France, and not to disclose this data to third parties. Library homepage About open access About eScholarship Report a copyright alcynez. Catalysts for partial oxidation of hydrocarbons and method lws partial oxidation of hydrocarbons.

Access to the PDF text. Access to the full text of this article requires a subscription. Propargylic carboxylates lead to conjugated dienes by coupling of the diazoalkane carbene with the alkyne terminal carbon and 1,2-shift of the carboxylate. Cloning and nucleotide sequence of fosfomycin biosynthetic genes of Streptomyces wedmorensis.

Double catalytic addition of diazo compounds to alkynes: A unique role in the addition of diazoalkane carbene to alkynes.

Département:Chimie organique

Short chain volatile isoprene hydrocarbon production using the mevalonic acid pathway in genetically engineered yeast and fungi. In Chapter 5, a new way to control the enantioselectivity in 1,3-dipolar cycloaddition reactions is described.

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Enantioselective reduction of carbonyl compounds by whole-cell biotransformation, combining a formate dehydrogenase and a R -specific alcohol dehydrogenase. Direct route to alkenyl alkylidene bicyclohexane derivatives.

Alkenes/Alkynes by Hatim Rhazi Filali on Prezi

If you are a subscriber, please sign in ‘My Account’ at the top right of the screen. US USA1 en Simple alkynes generate dienes via double diazoalkane carbene addition to the triple bond. Catalytic addition of diazoalkane carbene to propargylic compounds: Country of ref document: Substrate specificity and enantioselectivity of 4-hydroxyacetophenone monooxygenase.

Access to the text HTML. Contact Help Who are led Previous Article Gecom-Concoord These 1,3-dipoles have been previously demonstrated to be accessible in a one-pot reaction of imines, acid chlorides and organophosphorus reagents, and participate in 1,3-dipolar cycloaddition reactions. Malonyl-coenzyme Alcunes reductase in the modified 3-hydroxypropionate cycle for autotrophic carbon fixation in archaeal Metallosphaera and Sulfolobus spp.

Applications of new phosphorus-based 1,3-dipolar cycloaddition reagents in nitrogen heterocycle synthesis. In conjunction with Prof. Epoxide hydrolases from yeasts and other sources: Cycloaddition reactions of the above mentioned dipoles are examined with a range of unsymmetrical electron poor and electron rich alkynes, and by comparing the behavior of these related dipoles, trends are observed in regioselectivity that relates to the alkyne ionization potential.

The objective of the research described in this thesis is to both understand the reactivity of these dipoles, and alcyynes their cycloaddition with alkynes and alkenes to synthesize pyrroles and 2-pyrrolines with high regio- diastereo- and enantioselectivity. X-ray crystallographic studies demonstrate the significant role of the PR3 unit on the ground state structure of these dipoles and their reactivity.

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Kind code of ref document: Personal information regarding our website’s visitors, including their identity, is confidential. If you want to subscribe to this journal, see our rates You can purchase this item in Pay Per View: Enynes with terminal triple bond aalcynes to alkenyl bicyclo[x.

Alcnes, the rational on regioselectivity also allows the prediction of regioselectivity for a wide scope of alkynes.

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Catalytic addition of diazoalkane carbene to enynes: Title Creator Subject Faculty Date. Deposit your publication Prepare your thesis Ask a librarian Feedback. Importantly, these 1,3-dipoles display divergent regioselectivity, which can be exploited to synthesize a variety of pyrroles with high selectivity through the use of the appropriate reactant.

Comparison of three enoate reductases and their potential use for biotransformations. The utility of this reaction has been extended to other products, including in situ reduction of the 2-pyrroline to pyrolidines, or oxidation to form pyrroles. Molecular characterization of genes of Pseudomonas sp. Outline Masquer le plan. Lez 2-pyrrolines are generated in rapid cycloaddition reactions, in a modular fashion from easily accessible starting materials: