Results 101 to 110 of about 216,387 (290)

Synthesis and antitumoral activity of novel biaryl hydroxy-triazole and fluorene-triazole hybrids [PDF]

open access: yesExploration of Drug Science
Aim: The development of selective and potent antitumor agents remains a significant challenge. This study aimed to synthesize and evaluate biaryl hydroxy-1,2,3-triazoles and 9H-fluorene-1,2,3-triazole hybrids, inspired by previously identified bioactive ...
David Chafi Zeitune   +6 more
doaj   +1 more source

Inter- and intramolecular Diels-Alder/retro-Diels-Alder reactions of 4-silylated oxazoles [PDF]

open access: yes, 2002
4-Silylated oxazoles have been shown to undergo inter- and intramolecular Diels-Alder/retro-Diels-Alder reactions with electron-poor alkynes to generate polysubstituted furans.
Ducept, P.C., Marsden, S.P.
core   +1 more source

Cycloaddition reactions of enoldiazo compounds.

open access: yesChemical Society Reviews, 2017
Enoldiazo esters and amides have proven to be versatile reagents for cycloaddition reactions that allow highly efficient construction of various carbocycles and heterocycles.
Q. Cheng   +3 more
semanticscholar   +1 more source

Surface nano-patterning through styrene adsorption on Si(100)

open access: yes, 2005
We present an ab initio study of the structural and electronic properties of styrene molecules adsorbed on the dimerized Si(100) surface at different coverages, ranging from the single-molecule to the full monolayer.
A. C. Ferraz   +6 more
core   +1 more source

Catalytic Asymmetric Intramolecular [4+2] Cycloaddition of In Situ Generated ortho-Quinone Methides.

open access: yesAngewandte Chemie, 2017
Herein, we describe the first catalytic asymmetric intramolecular [4+2] cycloaddition of in situ generated ortho-quinone methides. In the presence of a confined chiral imidodiphosphoric acid catalyst, various salicylaldehydes react with dienyl alcohols ...
Youwei Xie, B. List
semanticscholar   +1 more source

Recent Applications of the Simple Hydrocarbon Cyclooctatetrene as a Starting Material for Complex Molecule Synthesis [PDF]

open access: yes, 2012
Cyclooctatetraene [COT], a simple non-aromatic cyclic polyene, is capable of undergoing a variety of oxidation and cycloaddition reactions to afford polycyclic structures.
Donaldson, William, Glaeske, Kevin W
core   +2 more sources

Functionalization of Silicon Surface by Thiadiazole Molecule : a DFT Study

open access: yes, 2018
The first principles density functional theory (DFT) calculations have been used to investigate the atomic and electronic properties of thiadiazole adsorption on the Si(001) surface.
Kaderoglu, Cagil
core   +1 more source

Cycloadditions of difluoromethylenecyclopropanes

open access: yesJournal of Fluorine Chemistry, 1982
Abstract The isomeric difluoromethylenecyclopropanes, 1 + 2 were allowed to react with various alkene and diene reagents in order to test the reactivity of these two species toward (2+2) and (2+4) cycloadditions. Reactions with 1,1-dichloro-2,2-difluoroethylene, butadiene, cyclopentadiene, furan and diphenylisobenzofuran were attempted.
Dept. of Chemistry, University of Florida, Gainesville, FL 32611, U.S.A. ( host institution )   +3 more
openaire   +3 more sources

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