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Ring Closing Metathesis (ring + closing_metathesis)

Distribution by Scientific Domains

Chemistry	100%

Selected Abstracts

Asymmetric Synthesis of Unusual Fused Tricyclic ,-Lactam Structures via Aza-Cycloadditions/Ring Closing Metathesis.

CHEMINFORM, Issue 26 2003
Benito Alcaide
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

,3 -Aryl/heteroaryl Substituted Heterocycles via Sequential Pd-Catalyzed Termolecular Cascade/Ring Closing Metathesis (RCM).

CHEMINFORM, Issue 6 2006
H. Ali Dondas
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

Annulated Butanolides by Ring Closing Metathesis of Diallyltetronic Acid Derivatives.

CHEMINFORM, Issue 37 2005
Rainer Schobert
Abstract For Abstract see ChemInform Abstract in Full Text. [source]

ChemInform Abstract: Cycloheptenyne Dicobalt Hexacarbonyl Complexes by Ring Closing Metathesis.

CHEMINFORM, Issue 28 2001
James R. Green
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Synthesis of the Salicylihalamide Core Structure from Epichlorohydrin, Laying the Foundation to Macrolactone Collections

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 4 2005
Christian Herb
Abstract Starting from (R)-epichlorohydrin, two successive carbon,carbon bond formations, one with acetylide and the other with cyanide, led to the 3-hydroxynitrile 20. This compound was further elaborated to the enynol 29 via an Evans aldol reaction of the derived aldehyde 22 with the pentenoyloxazolidinone 23 and conversion of the carboxyl to a methyl group after the aldol reaction. Mitsunobu esterification of the enynol 29 with the benzoic acid 5 gave rise to the ester 30 with two double bonds and one triple bond. After protection of the terminal triple bond with a TIPS group, the ring closing metathesis proceeded in good yield. The macrolactone E -33 was converted into the vinyl iodide 34 and the pyridin containing salicylihalamide analog 36. The described sequence, the two-sided elongation of epichlorohydrin appears as a general route to secondary alcohols that can be further elaborated to functionalized macrolactones. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005) [source]

Thin Layer Chromatography for the Detection of Unexpected Reactions in Organometallic Combinatorial Catalysis

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 8 2003
Olivier Lavastre
Abstract Thin layer chromatography (TLC) represents a fast and inexpensive alternative to NMR spectroscopy or analytical methods based on chromatography for the detection of unexpected products in organometallic combinatorial catalysis. This screening test led to the detection of the catalytic system [Ir(COD)Cl]2/PPh3 for isomerisation of diolefinic substrates instead the expected ring closing metathesis (RCM) reaction. [source]