Results 21 to 30 of about 245 (85)

Allylsulfones through Palladium‐Catalyzed Allylic C−H Sulfonylation of Terminal Alkenes

European Journal of Organic Chemistry, Volume 26, Issue 8, February 17, 2023., 2023
We report two distinct protocols for the preparation of allylsulfones via Pd(II)‐catalyzed allylic C−H activation. While the former protocol consists of a direct Pd(II)‐catalyzed oxidative C−H allylic sulfonylation in the presence of sulfinate anions, the latter involves a sequential one‐pot Pd(II)‐catalyzed C−H allylic acetoxylation followed by a Pd(0)
Tingting Chen, Jassmin Lahbi, Gianluigi Broggini, Alexandre Pradal, Giovanni Poli   +4 more
wiley   +1 more source

Asymmetric Pd(II)‐Catalyzed C−O, C−N, C−C Bond Formation Using Alkenes as Substrates: Insight into Recent Enantioselective Developments

European Journal of Organic Chemistry, Volume 26, Issue 2, January 10, 2023., 2023
Recent advances in Pd(II)‐catalyzed enantioselective mono‐ and difunctionalization of alkenes, involving C−O, C−N and C−C bond formation, are discussed, highlighting the fundamental role of ligands and reaction conditions optimization. This review summarizes the significant advances made over the last years and provides tools for developing new ...
Sabrina Giofrè, Letizia Molteni, Egle M. Beccalli   +2 more
wiley   +1 more source

Production of 2-Methoxy-1,4-benzoquinone (2-MBQ) and 2,6-Dimethoxy-1,4-benzoquinone (2,6-DMBQ) from Wheat Germ Using Lactic Acid Bacteria and Yeast

Food Engineering Progress, 2010
Wheat germ contains the glycosylated forms of 2-methoxy-p-benzoquinone (2-MBQ) and 2,6-dimethoxy-p-benzoquinone (2,6-DMBQ), both of which have antimicrobial and immunostimulatory effects. Conversion of glycosylated 2-MBQ and 2,6-DMBQ to their more functional unglycosylated forms requires enzymatic action of β-glucosidase.
Jong-Gil Yoo, Myoung-Dong Kim
openaire   +1 more source

Cu‐Catalyzed Aerobic Oxidative C─C Cleavage in Lignin‐Derived Oligomers and Biological Funneling of the Monomeric Products

Angewandte Chemie, Volume 138, Issue 2, 9 January 2026.
Catalytic aerobic oxidation under aqueous alkaline conditions promotes C–C cleavage in pine‐ and poplar‐derived lignin oligomers, accessing high yields of aromatic monomers. The monomeric phenols obtained from this process then undergo effective biological conversion into cis,cis‐muconic acid and 2‐pyrone‐4,6‐dicarboxylic acid using engineered strains ...
Surajudeen Omolabake, Dillon T. Hofsommer, Kathryn M. Mains, Chad T. Palumbo, Davide Rigo, Allison Z. Werner, Gregg T. Beckham, Shannon S. Stahl   +7 more
wiley   +2 more sources

Ecotoxicological assessment of p-benzoquinone oxidation byproducts in water treatment systems: oxidative stress responses and mechanisms

Environment International
p-Benzoquinone analogues, a class of ubiquitous oxidation byproducts, are increasingly detected in effluents from various oxidative treatment systems.
Zirui Liu, Dehua Ma, Qiang Cheng, Aroob Abid, Shuaijie Zhao, Chenyi Li, Qingzhuo Niu, Min Zheng   +7 more
doaj   +1 more source

Competing Pathways in Heme Catalyzed Oxidations With Porphyrin‐Centered Reactivity

ChemistryEurope, Volume 4, Issue 8, August 2026.
Heme‐catalyzed oxidations proceeding through porphyrin‐centered reactivity are quite rare. In attempts to optimize the catalytic umpolung of chloride proceeding via an isoporphyrin, we found a competing pathway. The iron(III) π‐dication readily performs alternative reactivity, leading to a bifurcation in reaction mechanisms at this point.
Silène Engbers, Lisa Wijtenhorst, Yisong Guo, Johannes E. M. N. Klein   +3 more
wiley   +1 more source

Autocatalytic Deprotection of Diboronate‐Protected Quinones via Redox Cross‐Catalysis: Mechanistic Insights Into Double Masking Strategies

ChemSystemsChem, Volume 8, Issue 4, July 2026.
Mechanistic insights and design principles of diprotected molecular probes for autocatalytic redox amplification systems: assessing the influence of molecular structure symmetry and electronic substituent effects on the double deprotection and autocatalytic response. ABSTRACT We report an autocatalytic molecular amplification system based on the double
Pan Hui, Alexandra Pastor, Mathieu Branca, Benoît Limoges, François Mavré   +4 more
wiley   +1 more source

CLE peptides in plant‐biotic interactions

New Phytologist, Volume 250, Issue 2, Page 805-811, April 2026.
Summary Plant‐biotic interactions are driven by the exchange of molecules. Small peptide hormones like CLAVATA3/EMBRYO SURROUNDING REGION (CLE) peptides play central regulatory roles in these interactions. CLEs determine the extent of symbiotic interaction to balance costs and benefits for the host.
Nicolas Frei dit Frey, Thomas Spallek
wiley   +1 more source

Electrode, Electrolyte, and Membrane Materials for Electrochemical CO2 Capture

Advanced Energy Materials, Volume 14, Issue 24, June 26, 2024.
Electrochemical carbon dioxide (CO2) capture (eCC) is an up‐and‐coming method of capturing and concentrating CO2 with several merits. This review provides a comprehensive understanding of the various eCC device materials used as electrodes, electrolytes, and membranes, with the discussion of their related working mechanisms and cell designs, revealing ...
Kaige Sun, Mike Tebyetekerwa, Hongxia Zhang, Xiangkang Zeng, Zhuyuan Wang, Zhen Xu, Thomas E. Rufford, Xiwang Zhang   +7 more
wiley   +1 more source

The Catalytic Asymmetric Allylic Alkylation of Acyclic Enolates for the Construction of Quaternary and Tetrasubstituted Stereogenic Centres

Chemistry – A European Journal, Volume 30, Issue 20, April 5, 2024.
This review describes the catalytic asymmetric allylic alkylation (AAA) of acyclic prochiral nucleophiles, namely enolates, as a means of accessing congested quaternary and tetrasubstituted stereogenic centres. In particular, strategies for the stereocontrolled access to acyclic enolate nucleophiles, as well as the impact of enolate geometry on the ...
Connor M. Griffiths, Vilius Franckevičius   +1 more
wiley   +1 more source