Results 111 to 120 of about 59,417 (298)

The moss Bryum argenteum var. muticum Brid. is well adapted to cope with high light in continental Antarctica [PDF]

open access: yes, 2012
The net photosynthetic rate (NP), chlorophyll fluorescence, carotenoid content and chlorophyll content of the cosmopolitan moss Bryum argenteum were measured in the field at Botany Bay, southern Victoria Land, continental Antarctica (77°S).
Green, T.G. Allan   +5 more
core   +3 more sources

Combining Photocatalytic Oxidation of β‐Chlorohydrins with Carbonyl Bioreduction in a Deracemization Approach

open access: yesChemSusChem, EarlyView.
The oxidation of β‐chlorohydrins is thermodynamically unfavourable. To solve this, different photocatalytic systems are explored under white light irradiation. Best results are achieved using 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone in stochiometric or catalytic loadings including tert‐butyl nitrite/O2 as regeneration system.
Sara Filgueira   +3 more
wiley   +1 more source

Synthesis of 19‐Hydroxyarachidonic Acid by Fungal Peroxygenases: An Experimental and Computational Study

open access: yesChemSusChem, EarlyView.
An experimental and computational investigation on the regio‐ and enantioselective hydroxylation of arachidonic acid by several unspecific peroxygenases (UPOs) revealed rAaeUPO A77L variant as the most attractive candidate for the selective production of valuable hydroxy‐fatty acids because of its enhanced regio and enantioselectivity and reduced ...
Alejandro González‐Benjumea   +7 more
wiley   +1 more source

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

open access: yesCarbohydrate 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   +2 more
doaj  

Polymeric Carbon Nitride‐Photocatalyzed Aerobic Epoxidation of Alkenes: Application to a Sustainable Synthesis of Rose Oxide

open access: yesChemSusChem, EarlyView.
Heterogenous photocatalyzed alkene epoxidation: A simple urea‐based polymeric carbon nitride catalyzes the aerobic epoxidation of citronellol and a range of other alkenes under visible light irradiation. Mediation by an aliphatic aldehyde can accelerate the reaction, and the photocatalytic method enables an efficient short synthesis of the terpenoid ...
Felix Lorenz   +4 more
wiley   +1 more source

Synthesis of an Epoxide for TMM Cycloadditions [PDF]

open access: yes, 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

Challenges and Opportunities in the Use of Iron Photosensitizers for Dye‐Sensitized Solar Cells and Photoelectrosynthetic Cells Applications

open access: yesEcoEnergy, EarlyView.
This review gathers examples of iron‐based photosensitizers that have been successfully immobilized on metal oxide surfaces for dye‐sensitized solar cells and potential dye‐sensitized photoelectrosynthesic cells applications. A critical comparison of Fe‐based photosensitizers is made based on their photophysical properties, electrochemistry, and ...
Lakshmi Narayan Satheesh   +3 more
wiley   +1 more source

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