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Cyclopentane Derivatives (cyclopentane + derivative)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

ChemInform Abstract: Selective Ring Expansion Alkylation of Formyl[2.2.1]bicyclic Carbinols with C-Nucleophiles: A Unique Route to Cyclopentane Derivatives.

CHEMINFORM, Issue 2 2008
Te-Fang Yang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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]

Dimethyl Phosphite Mediated Hydrogen Atom Abstraction: A Tin-Free Procedure for the Preparation of Cyclopentane Derivatives.

CHEMINFORM, Issue 51 2005
Florent Beaufils
No abstract is available for this article. [source]

Nd(OTf)3 -Catalyzed Cascade Reactions of Vinylidenecyclopropanes with Enynol: A New Method for the Construction of the 5,7,6 Tricyclic Framework and Its Scope and Limitations

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 24 2009
Liang-Feng Yao
Abstract We report in this paper a Lewis acid [Nd(OTf)3]-catalyzed protocol to construct compounds containing a 5,7,6 tricyclic framework in good yield from readily accessible starting materials vinylidenecyclopropanes (VDCPs) 1 and enynols 2a,c under mild conditions. Upon examination of the scope and limitations of this reaction, it was found that the corresponding highly functionalized cyclopentane derivatives could be formed in good yields from the reaction VDCPs 1 and enol 2e or dienol 2c under identical conditions.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) [source]

Thiophenol-Mediated 1,5-Hydrogen Atom Abstraction: Easy Access to Mono- and Bicyclic Compounds

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-13 2005
Florent Beaufils
Abstract A thiophenol-mediated method for cyclization of alkynes is described. The reaction cascade involves the intermolecular addition of a phenylthiyl radical to a terminal triple bond generating an alkenyl radical, followed by a 1,5-hydrogen atom transfer and a 5- exo- trig radical cyclization. This very efficient tin-free procedure allows one to prepare highly functionalized cyclopentane derivatives as well as fused bicyclic and spirocyclic compounds from easily available precursors. During this cyclization process, a phenylthio moiety is incorporated into the final cyclized products. This functionalization is particularly attractive for further transformation of the products. [source]

Long-range JCH heteronuclear coupling constants in cyclopentane derivatives.

MAGNETIC RESONANCE IN CHEMISTRY, Issue 1 2007
Part II
Abstract Here we report the detailed measurement of long-range heteronuclear spin,spin coupling constants, especially 2, 3JCH spin,spin couplings for eight different cyclopentane derivatives. These 2, 3JCH constants were shown to be a useful tool in the determination of the relative stereochemistry in these rings. The coupling constant measurements reported here are based on two different experiments: a 2D heteronuclear correlation experiment named G-BIRDR, X -CPMG-HSQMBC and the 2D-coupled gHSQC {1H- 13C} experiment Copyright © 2006 John Wiley & Sons, Ltd. [source]