Results 51 to 60 of about 5,333 (179)

Long‐Term Acclimation and Membrane Lipid Remodelling Enable Anaerobic Oxidation of Methane at Low‐pH by ‘Ca. Methanoperedens vercellensis’

open access: yesEnvironmental Microbiology, Volume 28, Issue 11, November 2026.
Anaerobic methanotrophic archaea from the genus ‘Ca. Methanoperedens’ are slow‐growing microorganisms utilizing a range of electron acceptors such as nitrate. A granular enrichment culture of ‘Ca. Methanoperedens vercellensis’ remains metabolically active during stepwise acidification of the medium down to pH 5.65, whereas its activity is inhibited by ...
Vojtěch Tláskal   +8 more
wiley   +1 more source

Stereo- and regiocontrolled synthesis of highly functionalized cyclopentanes with multiple chiral centers

open access: yes, 2020
The synthesis of some highly substituted three-dimensional cyclopentanes with multiple chiral centers and with high regiochemical and stereochemical diversity has been accomplished starting from cyclopentadiene-derived aminocyclopentenecarboxylic acids ...
Nonn Melinda   +7 more
core   +2 more sources

Stereoselective synthesis of 3,4-trans-disubstituted pyrrolidines and cyclopentanes via intramolecular radical cyclizations mediated by CAN

open access: yes, 2006
The stereoselective intramolecular cyclizations of bis(cinnamyl)tosylamides and dimethyl bis(cinnamyl)malonates mediated by cerium(IV) ammonium nitrate leading to the synthesis of 3,4-trans-disubstituted pyrrolidines and cyclopentanes are ...
Suresh, Eringathodi   +3 more
core   +1 more source

The Expanding Role of Diazirines in Synthetic Methodology

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 38, 13 October 2026.
Beyond their established role in photoaffinity labeling, diazirines have emerged as versatile reagents in synthetic chemistry. This review highlights their dual reactivity as carbene and nitrogen‐transfer precursors, showcasing mechanistic insights and diverse applications in cyclopropanations, cycloadditions, skeletal editing, amination, heterocycle ...
Viktor Savic   +3 more
wiley   +1 more source

Diastereo- and Enantioselective Intramolecular C(sp(3) )H Arylation for the Synthesis of Fused Cyclopentanes.

open access: yes, 2012
International audienceAll CH bonds are not equal: The intramolecular arylation of unactivated C(sp(3) )H bonds in the presence of a chiral Pd/binepine catalyst allows the synthesis of fused cyclopentanes efficiently and in an diastereo- and ...
Martin, Nicolas   +4 more
core   +1 more source

[60]Fullerene-Fused Cyclopentanes: Mechanosynthesis and Photovoltaic Application

open access: yes, 2023
The mechanochemical cascade reaction of [60]fullerene with 3-benzylidene succinimides, diethyl 2-benzylidene succinate, or 2-benzylidene succinonitrile in the presence of an inorganic base has been investigated under solvent-free and ball-milling ...
Huan Yang   +15 more
core   +1 more source

Dyotropic Rearrangement of Hypervalent Iodine Species: Migrative Heterofunctionalization of Quaternary Carbons

open access: yesAngewandte Chemie, Volume 138, Issue 41, 5 October 2026.
1,2‐Aryl migration involving in situ‐generated alkyl iodine(III) species proceeds through a previously unrecognized 1,2‐C/I(III) dyotropic rearrangement. Migratory aryl fluorination, acetoxylation, and alkoxylation of 2‐alkyl‐2‐aryl‐3‐iodopropanoates provide α‐heterofunctionalized products, accompanied by aryl migration from the α‐ to the β‐position ...
Chen‐Xu Liu   +3 more
wiley   +1 more source

Enantioselective construction of spirocyclic oxindolic cyclopentanes by palladium-catalyzed trimethylenemethane-[3+2]-cycloaddition

open access: yes
The palladium catalyzed [3+2] trimethylenemethane (TMM) cycloaddn. is an efficient method for the construction of cyclopentanes. Herein, a catalytic asym. protocol for the synthesis of spirocyclic oxindolic cyclopentanes, e.g., I, is reported.
Silverman, Steven M.   +2 more
core   +1 more source

A ring closing metathesis based approach for the spiroannulation of cyclopentanes and cyclohexanes. Formal synthesis of (+/-)-acorones

open access: yes, 2001
An efficient ring closing metathesis (RCM.) reaction based approach was developed for the spiroannulation of cyclopentanes and cyclohexanes and its utility demonstrated in the formal synthesis of the spirosesquiterpenes ...
Babu, NC   +7 more
core   +1 more source

Ti(II)-Mediated Tandem Inter- and Intramolecular Coupling Reaction of Unsaturated Hydrocarbons:  One-Pot Preparation of Cyclopentanes and Cyclohexanes from Readily Available Acyclic Starting Materials

open access: yes, 2016
Ti(II)-Mediated Tandem Inter- and Intramolecular Coupling Reaction of Unsaturated Hydrocarbons:  One-Pot Preparation of Cyclopentanes and Cyclohexanes from Readily Available Acyclic Starting ...
Sentaro Okamoto (1702069)   +2 more
core   +1 more source

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