Results 1 to 10 of about 854 (108)

Exocyclic push–pull conjugated compounds. Part 4: rotational barriers in poorly polarized push–pull ethylenes

open access: yesComputational and Theoretical Chemistry, 2001
The rotational barrier for substituted ethylenes was calculated with MO ab initio methods, both in the Hartree-Fock (HF) single determinant scheme and with multiconfigurational self-consistent field (MCSCF) approaches.
Bertarini C   +3 more
exaly   +2 more sources

Focus on Ethylene [PDF]

open access: yesPlant Physiology, 2015
First discovered as a plant growth regulator over a century ago, ethylene continues to be a focus for research worldwide due to the many roles it plays in growth, development, and adaptive responses to biotic and abiotic factors.
Eric Schaller, G.   +1 more
openaire   +4 more sources

Synthesis of Tetrasubstituted Ethylenes on Solid Support via Resin Capture

open access: yes, 2016
Synthesis of Tetrasubstituted Ethylenes on Solid Support via Resin ...
Robert W. Armstrong (2995713)   +1 more
core   +3 more sources

Synthesis and styrene copolymerization of novel trisubstituted ethylenes: 11. Acetyl, methoxy, and halogen ring-substituted octyl phenylcyanoacrylates

open access: yes, 2021
Novel trisubstituted ethylenes, acetyl, methoxy, and halogen ring-substituted octyl phenylcyanoacrylates, RPhCH=C(CN)CO2CH2(CH2)6CH3 (where R is 2-acetyl, 2,3,4-trimethoxy, 2,4,5-trimethoxy, 2,4,6-trifluoro, 3,4,5-trifluoro, 2,3,5,6-tetrafluoro, 2,3,4,5 ...
William, Schjerven   +12 more
core   +1 more source

Precursors of Ethylene [PDF]

open access: yesPlant Physiology, 1969
Two pathways for biosynthesis of ethylene in higher plants have been postulated (10). One is associated with the breakdown of peroxidized linolenic acid and the other involves the degradation of methionine. Although the formation of ethyilene from peroxidized linolenate has been demonstrated in model systems catalyzed by Cu24, oxygen and ascorbic acid (
A H, Baur, S F, Yang
openaire   +2 more sources

A comparative study of electrochemical, spectroscopic and structural properties of phenyl, thienyl and furyl substituted ethylenes [PDF]

open access: yes, 2017
a detailed electrochemical and photophysical comparative study of three parallel series of phenyl, thienyl and furyl substituted ethylenes has been carried out, implemented by the computational calculation of selected terms.
C. Botta   +23 more
core   +1 more source

Efficient synthesis of ferrocifens and other ferrocenyl-substituted ethylenes via a ‘sulfur approach’ [PDF]

open access: yes, 2018
Stable and non-odorous alkyl ferrocenyl thioketones react with bis(4-methoxyphenyl)diazomethane according to the ‘two-fold extrusion’ reaction principles, and tetrasubstituted ethylenes obtained thereby can be demethylated to give (Fc,2OH)-ferrocifens in
Celeda, Malgorzata   +3 more
core   +1 more source

An easy synthesis of thermochromic ethylenes under microwave irradiation

open access: yes, 2003
Thermochromic ethylenes were obtained by the reaction of anthrone with tricyclic ketones or terephthaldehyde in DMF in the presence of potassium ter-butoxide under reflux (8h) or under microwave irradiation (10 min.
Hammadi, Mohamed   +2 more
core   +2 more sources

Ethylene Receptor ETHYLENE RECEPTOR1 Domain Requirements for Ethylene Responses in Arabidopsis Seedlings     [PDF]

open access: yesPlant Physiology, 2011
Abstract Ethylene influences many processes in Arabidopsis (Arabidopsis thaliana) through the action of five receptor isoforms. We used high-resolution, time-lapse imaging of dark-grown Arabidopsis seedlings to better understand the roles of each isoform in the regulation of growth in air, ethylene-stimulated nutations, and growth ...
Heejung, Kim   +7 more
openaire   +2 more sources

Chemical Bonding in Polarised Push-Pull Ethylenes

open access: yes, 2019
1,1‐Diamino‐2,2‐bis(triflyl)ethylenes with both twisted and planar structures around the partial “C=C” bond were synthesised. Bonding properties in these compounds were analysed by an experimental approach using high‐resolution X‐ray diffraction data ...
Yanai, Hikaru   +15 more
core   +1 more source

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