Results 81 to 90 of about 48,446 (261)

Synthesis and conformations of [2.n]metacyclophan-1-ene epoxides and their conversion to [n.1]metacyclophanes [PDF]

, 2017
A series of syn- and anti-[2.n]metacyclophan-1-enes have been prepared in good yields by McMurry cyclizations of 1,n-bis(5-tert-butyl-3-formyl-2-methoxyphenyl)alkanes.
Akther, Thamina, Georghiou, Paris E., Islam, Md. Monarul, Matsumoto, Taisuke, Rahman, Shofiur, Redshaw, Carl, Tanaka, Junji, Yamato, Takehiko   +7 more
core   +1 more source

Total Synthesis of Novel Oxylipins: Plasmodiophorols A, C, and Epimers

European Journal of Organic Chemistry, EarlyView.
The first total syntheses of plasmodiophorols A and C, recently identified α‐linolenic acid‐derived oxylipins, were achieved from chiral cyclopentafuranone in 12–13 steps. The routes use enzymatic desymmetrization, epimerization, and diastereoselective Grignard addition, providing stereocontrolled access to the natural products and reliable standards ...
Alexandre Guy, Aurélien Lebrun, Thierry Durand, Camille Oger   +3 more
wiley   +1 more source

Synthesis of an Epoxide for TMM Cycloadditions [PDF]

, 2013
In order to produce a highly functionalized five-membered ring useful for further synthetic processes via Palladium catalysis, a series of precursors need to be synthesized in order to form the epoxide used in cyclic formation.
Freeland, Chase, Prusinski, Will
core   +2 more sources

Investigation of macrocyclisation routes to 1,4,7-triazacyclononanes : efficient syntheses from 1,2-ditosylamides [PDF]

, 2008
Two routes to the synthesis of a cyclohexyl-fused 1,4,7-triazacyclononane involving macrocyclisations of tosamides have been investigated. In the first approach, using a classic Richman-Atkins-type cyclisation of a cyclohexyl-substituted 1,4,7 ...
Gibson, C.L., Kennedy, A.R., McDavid, Colin L., Roux-Duplatre, Kewin, Sherrington, D.C., Stones, G., Tripoli, Régis   +6 more
core   +1 more source

A Green Amphoteric Surfactant Derived From Rapeseed Oil for Enhanced Oil Recovery From Carbonate Acidic Oil Reservoirs

Journal of Surfactants and Detergents, EarlyView.
The Green Amphoteric Surfactant Derived From Rapeseed Oil for Enhanced Oil Recovery From Carbonate Acidic Oil Reservoirs. ABSTRACT Surfactants with both positive and negative functional groups (amphoteric or zwitterionic) are particularly advantageous in acidic oil reservoirs because they remain stable under harsh chemical conditions, tolerate acidic ...
Iman Nowrouzi, Amir H. Mohammadi, Abbas Khaksar Manshad   +2 more
wiley   +1 more source

Ag-Cu alloy surfaces in an oxidizing environment: a first-principles study

, 2008
Recent experiments on model catalysts have shown that Ag-Cu alloys have improved selectivity with respect to pure silver for ethylene epoxidation. In this paper we review our first-principles investigations on the (111) surface of this alloy and present ...
Bocquet, Boer, Catherine Stampfl, Christensen, Ertl, Greeley, Greeley, Han, Hendriksen, Hohenberg, Hu, Huber, Jankowiak, Kim, Kitchin, Klikovits, Kohn, Kokalj, Li, Lindgren, Linic, Linic, Linic, Liu, Marzari, Matthias Scheffler, Maurel, Michaelides, Monkhorst, Neugebauer, Oppo, Perdew, Piccinin, Pleth Nielsen, Reuter, Reuter, Reuter, Reuter, Reuter, Reuter, Rogal, Røder, Schmid, Schnadt, Seriani, Simone Piccinin, Sinfelt, Soon, Stampfl, Stampfl, Stull, Tersoff, Torres, van Santen, Vanderbilt, Wang, Weinert   +56 more
core   +1 more source

Physiological responses of a halophytic shrub to salt stress by Na2SO4 and NaCl: oxidative damage and the role of polyphenols in antioxidant protection [PDF]

, 2014
Salt stress conditions lead to increased production of reactive oxygen species (ROS) in plant cells. Halophytes have the ability to reduce these toxic ROS by means of a powerful antioxidant system that includes enzymatic and non-enzymatic components.
Castagna, Antonella, Castro, Stella Maris, Furlan, Ana Laura, Luna, Maria Virginia, Ranieri, Annamaria, Reginato, Mariana Andrea   +5 more
core   +1 more source

Biobased Epoxidized Castor Oil Covalent Adaptable Networks Adhesives Reinforced with Recycled Carbon Fibers

Macromolecular Rapid Communications, EarlyView.
It is reported the design of biobased sustainable, smart, and functional adhesives achieved dispersing recycled carbon fibers into biobased epoxy monomer. ABSTRACT The development of sustainable, smart, and functional adhesives is crucial in advancing environmentally friendly materials.
Alberto Cellai, Rafael Turra Alarcon, Bernhard Sölle, Elisabeth Rossegger, Valentina Casalegno, Milena Salvo, Marco Sangermano   +6 more
wiley   +1 more source

Direct acetylation of sunflower oil in the presence of boron trioxide catalyst and the adduct usage as the base stock and lubricant additive

Bulletin of the Chemical Society of Ethiopia, 2017
Lubrication properties of sunflower oil have been modified by epoxidation in the first step and acetylation of the obtained epoxide in the second step.
J. Ashrafi, A. Semnani, H. S. Langeroodi, M. Shirani   +3 more
doaj   +1 more source

The remarkable catalytic activity of the saturated metal organic framework V-MIL-47 in the cyclohexene oxidation [PDF]

, 2010
The remarkable catalytic activity of the saturated metal organic framework MIL-47 in the epoxidation of cyclohexene is elucidated by means of both experimental results and theoretical ...
Leus, Karen, Marin, Guy, Muylaert, Ilke, Van Der Voort, Pascal, Van Speybroeck, Veronique, Vandichel, Matthias, Waroquier, Michel   +6 more
core   +2 more sources