Results 61 to 70 of about 84,237 (324)

Lactose as an inexpensive starting material for the preparation of aldohexos-5-uloses: synthesis of L-ribo and D-lyxo derivatives [PDF]

, 2010
SUMMARY: Partially protected derivatives of L-ribo- and D-lyxo-aldohexos-5-ulose have been prepared starting from triacetonlactose dimethyl acetal derivatives.
Catelani, Giorgio, D'Andrea, Felicia, Guazzelli, Lorenzo   +2 more
core   +1 more source

Identification of Double Bond Position Isomers in Unsaturated Lipids by m-CPBA Epoxidation and Mass Spectrometry Fragmentation.

Analytical Chemistry, 2019
Lipids are highly diverse biomolecules associated with several biological functions including structural constituent, energy storage, and signal transduction.
Yu Feng, Bingming Chen, Qinying Yu, Lingjun Li   +3 more
semanticscholar   +1 more source

Effect of Degumming and Bleaching on the Yield and Quality of Epoxidized Hempseed Oil

ChemEngineering
Crude hemp (Cannabis sativa L.) seed oil (HSO) has a high degree of unsaturation, which has increased its interest in many industrial applications, especially epoxy-resin production.
Tosin Oyewole, Emily Biggane, Niloy Chandra Sarker, Ewumbua Monono   +3 more
doaj   +1 more source

Selective epoxidation of soybean oil with performic acid catalyzed by acidic ionic exchange resins

Green Processing and Synthesis, 2013
This work studied the epoxidation of soybean oil with aqueous hydrogen peroxide and formic acid, in the presence of acidic ionic exchange resins as catalysts.
Turco Rosa, Vitiello Rosa, Russo Vincenzo, Tesser Riccardo, Santacesaria Elio, Di Serio Martino   +5 more
doaj   +1 more source

Cloisite 15Aº nanoclay as an effective PTC for the epoxidation of hydroxyl terminated polybutadiene (HTPB)

Polímeros, 2014
A simple method is reported for the epoxidation of hydroxyl-terminated polybutadiene (HTPB) by using in-situ generated dimethyl dioxirane (DMD) as an oxidant and Cloisite 15Aº nanoclay as a phase-transfer catalyst (PTC).
Mir Mohammad Alavi Nikje, Maryam Gholi Nataj   +1 more
doaj   +1 more source

Asymmetric Epoxidation of Olefins with Sodium Percarbonate Catalyzed by Bis-amino-bis-pyridine Manganese Complexes

Molecules, 2022
Asymmetric epoxidation of a series of olefinic substrates with sodium percarbonate oxidant in the presence of homogeneous catalysts based on Mn complexes with bis-amino-bis-pyridine ligands is reported.
Varvara A. Drozd, Roman V. Ottenbacher, Konstantin P. Bryliakov   +2 more
doaj   +1 more source

Ca–Ag compounds in ethylene epoxidation reaction

Science and Technology of Advanced Materials, 2019
The ethylene epoxidation is a challenging catalytic process, and development of active and selective catalyst requires profound understanding of its chemical behaviour under reaction conditions.
Iryna Antonyshyn, Olga Sichevych, Alim Ormeci, Ulrich Burkhardt, Karsten Rasim, Sven Titlbach, Marc Armbrüster, Stephan A. Schunk, Yuri Grin   +8 more
doaj   +1 more source

Heterogenisation of ketone catalysts within mesoporous supports for asymmetric epoxidation

, 2013
The synthesis of the first mesoporous silica (150 Å) anchored carbohydrate-derived chiral ketone is described. This new heterogeneous catalyst has been shown to be effective in the asymmetric epoxidation of olefins by oxone.
Adam, Aggarwal, Amadori, Amadori, Armstrong, Beckwith, Bellamy, Bloch, Caprio, Chadwick, Cho, Corey, Denmark, Denmark, Denmark, Dondoni, Farina, Frohn, Goeddel, Heitbaum, Hutchings, Jacobsen, Johansson Seechurn, Johnson, Johnson, Jones, Katsuki, McMorn, Page, Page, Pedragosa-Moreau, Raja, Raynor, Ren, Romesberg, Ross, Sartori, Shephard, Shu, Song, Stearman, Thomas, Thomas, Thomas, Tian, Tian, Tian, van den Broek, Wang, Wang, Wang, Wang, Wong, Wong, Xia, Xiong, Xuereb, Yang, Yang, Zhao, Zhu   +60 more
core   +1 more source

Biosynthesis of sulfonated carbon catalyst from carbohydrate polymer derivatives for epoxidation of Croton macrostachyus seed oil

Carbohydrate Polymer Technologies and Applications, 2022
In the present study, biosynthesis of sulfonated carbon acid catalyst from brewery spent grain through carbonation process followed by sulphonation method used for production of epoxy oil from Croton macrostachyus seed oil in presence of acetic acid as ...
Tafere Aga Bullo, Yigezu Mekonnen Bayisa, Mohammed Seid Bultum   +2 more
doaj   +1 more source

Epoxidation of Cyclooctene Using Water as the Oxygen Atom Source at Manganese Oxide Electrocatalysts.

Journal of the American Chemical Society, 2019
Epoxides are useful intermediates for the manufacture of a diverse set of chemical products. Current routes of olefin epoxidation either involve hazardous reagents or generate stoichiometric side products, leading to challenges in separation and ...
K. Jin, Joseph H. Maalouf, Nikifar Lazouski, Nathan Corbin, Dengtao Yang, Karthish Manthiram   +5 more
semanticscholar   +1 more source