Results 71 to 80 of about 3,977 (186)

The Role of Hydrogen Spillover on Ru/MoO3 in the Hydrodeoxygenation of Phenol as a Lignin Model Compound

ChemCatChem, Volume 18, Issue 5, 13 March 2026.
MoO3 is active for hydrodeoxygenation of phenol at high temperatures. Ru/MoO3 gives high conversions and selectivities at lower temperature. Catalytic performance correlates with both Ru content and the concentration of Mo–OH sites on the surface (formed by hydrogen spillover from Ru) but not with the amount of reduced Mo centers (oxygen vacancies). Mo–
Mustafa Turan, Felix Göttler, Sara Noack, Michael Benz, Deven P. Estes   +4 more
wiley   +1 more source

Catalytic Asymmetric Transfer Hydrogenation of Imines: Recent Advances [PDF]

, 2015
In this review article recent developments in the asymmetric transfer hydrogenation of imines from 2008 up to today are presented. The main methodology involves either metal-catalyzed procedures in the presence of a chiral ligand or organocatalyzed ...
Foubelo, Francisco, Yus, Miguel
core   +2 more sources

Comprehensive Characterization of Key Flavor‐Active Compounds in Chestnut Liquors Using Complementary HS–SPME–GC–MS and HS–GC–IMS Approaches

Food Frontiers, Volume 7, Issue 2, March 2026.
Volatile compounds in chestnut liquors and traditional Baijiu are profiled using HS‐GC‐IMS, HS‐SPME‐GC‐MS, and quantitative sensory evaluation. Esters, particularly ethyl hexanoate, ethyl pentanoate, and ethyl octanoate, are identified as key aroma contributors with intense fruity notes.
Tingting Qi, Zhenlin Han, Xuemei Yang, Zihan Liu, Guangning Shen, Zhicong Su, Liming Sun, Kunpeng Zhang, Cheng Liu   +8 more
wiley   +1 more source

Depletion of Microglia Increases Cortical Oligodendrocyte Density During Remyelination

Glia, Volume 74, Issue 3, March 2026.
Cuprizone demyelination induces transient reactive states in deep cortical microglia (MG) through early recovery. Depleting MG in recovery increases the number of deep cortical mature/pre‐myelinating oligodendrocytes. Deep cortical reactive MG reduce oligodendrocyte density after demyelination.
Hannah Katherine Loo, Joseph Gallegos, Christine Mialki, Gregory E. Perrin, Thomas Malloy, Jennifer L. Orthmann‐Murphy   +5 more
wiley   +1 more source

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

Mass Spectrometry Reviews, Volume 45, Issue 2, Page 392-428, March/April 2026.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo, Huiling Wang, Xiaolan Hu, Sasho Gligorovski, Xue Li, Pablo Sinues   +5 more
wiley   +1 more source

Catalytic enantioselective synthesis of quaternary carbon stereocentres. [PDF]

, 2014
Quaternary carbon stereocentres-carbon atoms to which four distinct carbon substituents are attached-are common features of molecules found in nature. However, before recent advances in chemical catalysis, there were few methods of constructing single ...
Overman, Larry E, Quasdorf, Kyle W
core  

Glyoxylic Acid versus Ethyl Glyoxylate for the Aqueous Enantio­selective Synthesis of α-Hydroxy-γ-Keto Acids and Esters by the N-Tosyl-(S a)-binam-l-prolinamide-Organocatalyzed Aldol Reaction [PDF]

, 2015
N-Tosyl-(S a)-binam-l-prolinamide is an efficient catalyst for the aqueous aldol reaction between ketones and glyoxylic acid, as the monohydrate or as an aqueous solution, or a 50% toluene solution of ethyl glyoxylate.
Guillena, Gabriela, Gómez Bengoa, Enrique, Navarro Moles, Fernando Javier, Nájera, Carmen   +3 more
core   +2 more sources

Effect of α‐Hydrazino Acids on the Performance of H‐Pro–Pro‐Xaa Catalysts in the Conjugate Addition of Aldehydes to Nitroolefins

ChemistrySelect, Volume 11, Issue 11, 18 March 2026.
The tripeptide Pro‐Pro‐D‐hVal‐OMe, which lacks an acidic group, catalysed the conjugate addition of aldehydes to nitroolefins and afforded γ‐nitroaldehydes in 79–97% yield and 88:14–93:7 e.r. The proposed reaction mechanism relies on the active role of hydrazide NHβ or NHα protons in hydrogen bonding with the reacting species.
Ivona Banović, Ivana Nikšić‐Franjić, Ivanka Jerić   +2 more
wiley   +1 more source

Chiral auxiliaries in polymer-supported organic synthesis [PDF]

, 2004
The use of chiral auxiliaries in polymer-supported organic synthesis is reviewed. In many of the examples presented, not only does the auxiliary serve as an element for inducing asymmetry into the synthesis, but it also functions as the linker for ...
Chung, CWY, Toy, PH
core   +1 more source

Electrocatalytic Reduction and Oxidation Conversion of Plant Biomass

Small Structures, Volume 7, Issue 3, March 2026.
This review therefore establishes a unified “compound–catalyst–conversion” paradigm, systematically categorizing and analyzing electrocatalytic oxidation and reduction pathways for the three major classes of plant‐derived components—aromatics, aliphatics, and terpenoids—to provide a clear navigational map for the field.
Zhuoya Zhao, Dingyi Liu, Yarong Yang, Haiyan Huang, Xuan Wang, Guanglei Li, Jiaojiao Miao, Chuanling Si   +7 more
wiley   +1 more source