Results 21 to 30 of about 41,666 (217)

Niobia as an efficient catalyst for the epoxidation of dicyclopentadiene

Catalysis Communications, 2023
We studied the epoxidation of dicyclopentadiene (DCPD) with hydrogen peroxide over different heterogeneous catalysts. Among them, niobium pentoxide (Nb2O5) catalysts showed promising catalytic activity, giving mono- and di-epoxy DCPD with low amounts of ...
Sang-Ho Chung, Vikash Lachman, Thierry K. Slot, N. Raveendran Shiju   +3 more
doaj  

The comparative quantum chemical study of the epoxidation reaction mechanism of eugenol and isoeugenol with peracetic and perbenzoic acids

Журнал органічної та фармацевтичної хімії, 2019
Aim. To study the kinetics of the epoxidation reaction for eugenol and isoeugenol with perbenzoic acid, carry out the comparative quantum chemical study of the epoxidation reaction mechanism of eugenol and isoeugenol isomers (2-cis and 2-trans) with ...
O. M. Agafonov, Sergiy I. Okovytyy, Mykola Ye. Blazheyevskiy   +2 more
doaj   +1 more source

Greener and sustainable method for alkene epoxidations by polymer-supported Mo(VI) catalysts [PDF]

, 2009
A polybenzimidazole supported Mo(VI) (PBI.Mo) catalyst has been prepared and characterised. The catalytic activities of the PBI.Mo catalyst in epoxidation of alkenes with tert-butyl hydroperoxide (TBHP) as an oxidant have been studied under different ...
Ambroziak, K., Mbeleck, R., Saha, B., Sherrington, D.C.   +3 more
core   +2 more sources

Chemo-enzymatic epoxidation of fatty compounds – Focus on processes involving a lipase-catalyzed perhydrolysis step

Oléagineux, Corps gras, Lipides, 2008
At the industrial scale, the chemical Prileshajev reaction is currently the only method applied to produce epoxidized plant oils. Using enzymes could be an alternative way allowing an environmentally benign and more selective epoxidation reaction.
Tiran Céline, Lecomte Jérôme, Dubreucq Eric, Villeneuve Pierre   +3 more
doaj   +1 more source

Effects of different epoxidation methods of soybean oil on the characteristics of acrylated epoxidized soybean oil-co-poly(methyl methacrylate) copolymer

eXPRESS Polymer Letters, 2013
The effect of the type of epoxidation processes of soybean oil on the characteristics of epoxidized soybean oils (ESOs), acrylated epoxidized soybean oils (AESOs), and acrylated epoxidized soybean oil – poly(methyl metacrylate) copolymers (AESO-co-PMMA ...
V. Tanrattanakul, P. Saithai, E. Dubreucq, J. Lecomte   +3 more
doaj   +1 more source

Modification of chiral dimethyl tartrate through transesterification : immobilisation on POSS and enantioselectivity reversion in Sharpless asymmetric epoxidation [PDF]

, 2010
Modification of dimethyl tartrate has been investigated through transesterification with aminoalcohols to provide reactive functionalities for the covalent bonding of chiral tartrate to polyhedral oligomeric silsesquioxanes.
García, Rafael A., Gibson, Colin L., Iglesias, José, Sherrington, David C., Van Grieken, Rafael   +4 more
core   +1 more source

ATP allosterically activates the human 5-lipoxygenase molecular mechanism of arachidonic acid and 5(S)-hydroperoxy-6(E),8(Z),11(Z),14(Z)-eicosatetraenoic acid. [PDF]

, 2014
5-Lipoxygenase (5-LOX) reacts with arachidonic acid (AA) to first generate 5(S)-hydroperoxy-6(E),8(Z),11(Z),14(Z)-eicosatetraenoic acid [5(S)-HpETE] and then an epoxide from 5(S)-HpETE to form leukotriene A4, from a single polyunsaturated fatty acid ...
Barbour, Shannon R, Hixon, Mark S, Holman, Theodore R, Smyrniotis, Christopher J, Xia, Zexin   +4 more
core   +2 more sources

Structural and Electronic Properties of Oxidized Graphene [PDF]

Physical Review Letters 103, 086802 (2009)., 2009
We have systematically investigated the effect of oxidation on the structural and electronic properties of graphene based on first-principles calculations. Energetically favorable atomic configurations and building blocks are identified, which contain epoxide and hydroxyl groups in close proximity with each other.
arxiv   +1 more source

Modular polyoxometalate-layered double hydroxides as efficient heterogeneous sulfoxidation and epoxidation catalysts [PDF]

, 2018
Selective sulfoxidation of sulfides and epoxidation of olefins are two types of important organic reactions and the corresponding products of sulfoxides, sulfones and epoxides are widely used as raw materials in industrial processes.
Al-Maksoud, Bayat, Cai, Chen, Chen, Chen, Doherty, Dou, Fan, Graham, Guo, Herrmann, Herrmann, Herrmann, Hong, Huang, Iyi, Jia, Jia, Karimi, Karimi, Kawahara, Kon, Koo, Lechner, Leng, Li, Li, Li, Liang, Liu, Liu, Liu, Miras, Mizuno, Mizuno, Omwoma, Park, Peacock, Poli, Qiao, Salvati, Shi, Shi, Song, Venturello, Wang, Weir, Xie, Xu, Yamaguchi, Yang, Zhao, Zhao, Zhao, Zhao, Zhou, Zhou   +57 more
core   +1 more source

Biocatalytic Conversion of Epoxides [PDF]

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Erik J. de Vries, Dick B. Janssen
openaire   +4 more sources