Results 61 to 70 of about 29,601 (261)

Switchable asymmetric bio-epoxidation of alpha,beta-unsaturated ketones

, 2016
Efficient asymmetric bio-epoxidation of electron-deficient alpha,beta-unsaturated ketones was realized via a tandem reduction-epoxidation-dehydrogenation cascade, which proceeds in a switchable manner to afford either chiral epoxy ketones or allylic ...
Liu, YC, Wu, ZL (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Environm & Appl Microbiol CAS, Chengdu 610041, Peoples R China., Wu, ZL   +2 more
core   +1 more source

Macrocellular Titanosilicate Monoliths as Highly Efficient Structured Olefin Epoxidation Catalysts [PDF]

, 2019
Self-standing macrocellular titanosilicate monolith foams are obtained using a one-pot sol-gel route and show excellent performance in the epoxidation of cyclohexene.
Tarek, Barakat, Ludivine van den, Biggelaar, Damien, Debecker, Valentin, Smeets, Eric M., Gaigneaux   +4 more
core   +2 more sources

Mesoporous SiO2–TiO2 Epoxidation Catalysts: Tuning Surface Polarity to Improve Performance in the Presence of Water [PDF]

, 2018
In order to circumvent the deactivation of the amorphous and mesoporous TiO2–SiO2 catalyst, we investigated the effect of surface hydrophobization on the catalyst activity in the presence of water for the epoxidation of ...
Lilia Ben, Mustapha, Lilia Ben Mustapha (4977218), Schnee, Josefine, Ben Mustapha, Lilia, Valentin, Smeets, Eric M., Gaigneaux, Lilia Ben Mustapha, Damien Debecker (4977188), Gaigneaux, Eric M., Damien P. Debecker, Valentin Smeets (4977215), Eric M. Gaigneaux (1975606), Josefine Schnee, Damien Debecker, Damien, Debecker, Smeets, Valentin, Eric M. Gaigneaux, Valentin Smeets, Josefine, Schnee, Josefine Schnee (3614978), Debecker, Damien P.   +20 more
core   +1 more source

StyA1 and StyA2B from Rhodococcus opacus 1CP: a Multifunctional Styrene Monooxygenase System [PDF]

, 2010
Two-component flavoprotein monooxygenases are emerging biocatalysts that generally consist of a monooxygenase and a reductase component. Here we show that Rhodococcus opacus 1CP encodes a multifunctional enantioselective flavoprotein monooxygenase system
Groning, J.A.D., Michael Schlömann, Kaschabek, S.R., Dirk Tischler, Stefan R. Kaschabek, van Berkel, W.J.H., Tischler, D., Berkel, W.J.H., van, Willem J. H. van Berkel, René Kermer, Janosch A. D. Gröning, Schlomann, M., Kermer, R.   +12 more
core   +1 more source

Opportunities and Challenges in Electrolytic Propylene Epoxidation

, 2022
Propylene oxide (PO) is an important chemical. So far, its synthesis protocol relies on expensive oxidants. In contrast, direct epoxidation of propylene (DEP) using molecular oxygen is considered ideal for PO synthesis.
Anand, Megha, Abraham, Christina Susan, Cao, Ang, Li, Hao, Nørskov, Jens K.   +4 more
core   +2 more sources

ROLE OF Mn(TPP)Cl IN THE EPOXIDATION WITH SINGLET OXYGEN [PDF]

Journal of Sciences, Islamic Republic of Iran, 2000
Mn(TPP)Cl catalyzes cooxidation of olefin in the singlet oxygenation of sulfid. Mn(TPP)Cl is able to transfer an oxygen atom from a peroxidic intermediate generated in singlet oxygenation of sulfide to a metal ion affording metal 0x0 species which is ...
doaj  

Research Progress in Epoxidation of Light Small-Molecule Olefins

Molecules
Light olefins, as important bulk raw materials in the petrochemical industry, play an irreplaceable role in the development of the manufacturing industry and the economy.
Guanghui Zhao, Tianfu Yang, Jincheng Liu, Xianming Xu, Yulong Wang, Yongjun Zhang, Meng Gao, Chao Xiong, Hongbing Ji   +8 more
doaj   +1 more source

Glutaraldehyde-crosslinked Rhizopus oryzae whole cells show improved catalytic performance in alkene epoxidation

Microbial Cell Factories, 2023
Background Existing methods for alkene epoxidation are based on lipase-catalysed perhydrolysis. However, the inactivation of the expensive lipase enzyme is problematic for enzymatic epoxidation at large scales due to the use of hydrogen peroxide and ...
Lili Xu, Yimin Qin, Yufeng Song, Aixing Tang, Youyan Liu   +4 more
doaj   +1 more source

Selective and metal-free epoxidation of terminal alkenes by heterogeneous polydioxirane in mild conditions [PDF]

Royal Society Open Science, 2018
Polydioxirane (PDOX) was prepared by the treatment of polysalicylaldehyde with Oxone and was found as a selective, highly efficient and heterogeneous reagent for epoxidation of alkenes which can be successfully isolated.
M. Kazemnejadi, A. Shakeri, M. Nikookar, R. Shademani, M. Mohammadi   +4 more
doaj   +1 more source

Heterogeneous enantioselective epoxidation catalyzed by Mn(salen) complexes grafted onto mesoporous materials by phenoxy group

, 2005
Three chiral Mn(salen) complexes were immobilized into different mesoporous material via phenoxy group by a simplified method and they show high activity and enantioselectivity for asymmetric epoxidation of various substituted unfunctional olefins.
Zhang, HD, Xiao, JL, Li, C, 李灿, Xiang, S   +4 more
core   +1 more source