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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Alcynws specificity and enantioselectivity of 4-hydroxyacetophenone monooxygenase. Deposit your publication Prepare your thesis Ask a librarian Feedback. You can move this window by clicking on the headline. Record 1 of 1.

CHIM 263 – Chimie organique II

Cloning and nucleotide sequence of fosfomycin biosynthetic genes of Streptomyces wedmorensis. Enzymatic processes for the production of 4-substituted 3-hydroxybutyric acid derivatives and vicinal cyano, hydroxy substituted carboxylic acid esters.

Conjointement avec le Pr. Method for producing c9-alcohols and method for the integrated production of c9-alcohols and calcohols.

CHIM – Chimie organique II – Acalog ACMS™

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 University’s open access institutional repository: Country of ref document: Different phosphites and phosphonites are tested for their ability to mediate intramolecular cycloaddition with alkenes, and optimum results are obtained with 2-catechyl PPh. Title Creator Subject Faculty Date. Simple alkynes generate dienes via double diazoalkane carbene addition to the triple bond. Method for producing distillate from a hydrocarbon feed, comprising alcohol condensation.

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Catalysts for partial oxidation of hydrocarbons and method of partial oxidation of hydrocarbons. Importantly, these 1,3-dipoles display divergent regioselectivity, which can be exploited to synthesize a variety ls pyrroles with high selectivity through the use of the appropriate reactant. Houk et le Dr. 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.

A unique role in the addition of diazoalkane carbene to alkynes. Access to the full text of this article requires a subscription. In conjunction with Prof. Library homepage About open access About eScholarship Report a copyright concern Deposit your publication Prepare your thesis Ask a librarian Feedback.

Personal information regarding our website’s visitors, including their identity, is confidential. Malonyl-coenzyme A reductase in the modified 3-hydroxypropionate cycle for autotrophic carbon fixation in archaeal Metallosphaera and Sulfolobus spp.

les alcynes cours pdf

Kind code of ref document: In addition, the reaction proceeds with high diastereo- and regioselectivity. US USA1 en Molecular characterization of genes of Pseudomonas sp.

Lse 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. Catalysis, Ruthenium, Diazo compounds, Carbene, Alkynes. Direct route to alkenyl alkylidene bicyclohexane derivatives. Top of the page – Article Outline.

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Access to the text HTML. Enynes with terminal triple bond lead to alkenyl bicyclo[x. X-ray crystallographic studies demonstrate the significant role of the PR3 unit on the ground state structure of these dipoles and their reactivity.

Département:Chimie organique — Wikiversité

Library homepage About open access About eScholarship Report a copyright concern. Previous Article Gecom-Concoord 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.

Catalytic addition of diazoalkane carbene to propargylic compounds: 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.

Propargylic carboxylates lead to conjugated dienes by coupling of the diazoalkane carbene with the alkyne terminal carbon and 1,2-shift of the carboxylate.

All items in eScholarship McGill are protected by copyright with all rights reserved unless otherwise indicated. As such, this provides a straightforward approach to control chirality in 1,3-dipolar cycloaddition reactions.

Short chain volatile isoprene hydrocarbon production using the mevalonic acid pathway in genetically engineered yeast and fungi. Epoxide hydrolases from yeasts and other sources: If you want to subscribe to this journal, see our rates You can purchase this item in Pay Per View: