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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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aldynes Catalysts for partial oxidation of hydrocarbons and method of partial oxidation of hydrocarbons. Enzymatic processes for the production of 4-substituted 3-hydroxybutyric acid derivatives and vicinal cyano, hydroxy substituted carboxylic acid esters.

In addition, the reaction proceeds with high diastereo- and regioselectivity. Cloning and nucleotide sequence of fosfomycin biosynthetic genes of Streptomyces wedmorensis. Kind code of ref document: Personal information regarding our website’s visitors, including their identity, is confidential. If you are a subscriber, please sign in ‘My Account’ at the top right of the screen. Substrate specificity and enantioselectivity of 4-hydroxyacetophenone monooxygenase.

Molecular characterization of genes of Pseudomonas sp. Propargylic carboxylates lead to conjugated dienes by coupling of the diazoalkane carbene with the alkyne terminal carbon and 1,2-shift of the carboxylate. Record 1 of 1. The University’s open access institutional repository: You may thus request that your data, should it be inaccurate, incomplete, unclear, outdated, not be used or stored, be corrected, clarified, updated or deleted.

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Previous Article Gecom-Concoord EP Kind code of ref document: Deposit your publication Prepare your thesis Ask a librarian Feedback. Catalytic addition of diazoalkane carbene to propargylic compounds: Similarly, the rational on regioselectivity also allows the prediction of regioselectivity for a wide scope of alkynes. Comparison of three enoate reductases and their potential use for biotransformations.

Catalysis, Ruthenium, Diazo compounds, Carbene, Alkynes. Epoxide hydrolases from yeasts and other sources: Enynes with terminal triple bond lead to alkenyl bicyclo[x. Method for producing c9-alcohols and method for the integrated production of c9-alcohols and calcohols. In addition, the results of the theoretical investigation of Chapter 2 are exploited to show how changes in the phosphorus substituents can be used to fine tune regioselectivity of alkyne cycloadditions without modifying the substituents on the final product.

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Library homepage About open access About eScholarship Report a copyright concern Deposit your publication Prepare your thesis Ask a librarian Feedback. Access to the PDF text.

Access to alccynes text HTML. 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. Polycyclic 2-pyrrolines are generated in rapid cycloaddition reactions, in a modular fashion from easily accessible starting materials: Methods less refining and producing dibasic esters and acids from natural oil feedstocks.

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As per the Law relating to information storage and personal integrity, you have the right to oppose art 26 of that lawaccess art 34 of that law and rectify art 36 of that law your personal data. Malonyl-coenzyme A reductase in the modified 3-hydroxypropionate cycle for autotrophic carbon fixation in archaeal Metallosphaera and Sulfolobus spp. All items in eScholarship McGill are aocynes by copyright with all rights reserved unless otherwise indicated.

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Simple alkynes generate dienes via double diazoalkane carbene addition to the triple bond.

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Conjointement avec le Pr. If you want to subscribe to this journal, see our rates You can purchase this item in Pay Per View: In conjunction with Prof. Catalytic addition of diazoalkane carbene to enynes: Enantioselective reduction of carbonyl compounds by whole-cell biotransformation, combining a formate dehydrogenase and a R -specific alcohol dehydrogenase.

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. Contact Help Who are we? Title Creator Subject Faculty Date. The objective of the research described in this thesis is to both understand the reactivity of these dipoles, and exploit their cycloaddition with alkynes and alkenes to synthesize pyrroles and 2-pyrrolines with high regio- diastereo- and enantioselectivity.

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