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Selectivity in ring-opening metatheses

✍ Scribed by John A. Tallarico; Michele L. Randall; Marc L. Snapper


Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
596 KB
Volume
53
Category
Article
ISSN
0040-4020

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✦ Synopsis


The development of new olefin metathesis catalysts has allowed for the introduction of unique synthetic transformations. In this regard, ring-opening metathesis (ROM) offers a novel means of constructing diene-containing systems. The factors behind the chemo-, regio-and stereoselectivities of ROM are examined. The mechanistic models suggested are supported by stoichiometric studies of the unique ruthenium alkylidenes formed during the ROM of various cyclobutene-containing substrates.


πŸ“œ SIMILAR VOLUMES


ChemInform Abstract: Selectivity in Ring
✍ J. A. TALLARICO; M. L. RANDALL; M. L. SNAPPER πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 31 KB πŸ‘ 1 views

1998 cleavage reactions, decomposition reactions, pyrolysis cleavage reactions, decomposition reactions, pyrolysis O 0100 ## 12 -046 Selectivity in Ring-Opening Metatheses. -In the presence of the Ru-catalyst shown in the scheme cyclic olefins can undergo ring-opening metathesis to afford dienes.

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Several isomeric aromatic diester-diacids may appear as a result of the opening selectivity of anhydride groups towards the alcohol. 1H n.m.r, was thus used to characterize the isomeric structure and to quantify the isomer composition. It was found that the isomer ratios quantitatively correlate wit