Results 61 to 70 of about 5,806 (187)

Main Group Metals in Redox Catalysis

European Journal of Inorganic Chemistry, Volume 29, Issue 22, 1 August 2026.
Main group metal redox catalysis is emerging as a credible alternative to transition metal chemistry. Elements from groups 13 to 15 now enable diverse catalytic manifolds, driven by ligand design and control of electronic structure. This review highlights recent advances, key design principles, and remaining challenges, positioning main group metals as
Olympia Mouriki, Alba Martinez‐Bascuñana, Oriol Planas   +2 more
wiley   +1 more source

Iodine-catalyzed diazo activation to access radical reactivity

Nature Communications, 2018
Radical reactivity of diazo compounds, useful organic building blocks, is yet underexplored. Here, the authors report an iodine-catalyzed radical activation of diazo compounds affording a variety of substituted cyclopropanes, pyrroles and epoxides under ...
Pan Li, Jingjing Zhao, Lijun Shi, Jin Wang, Xiaodong Shi, Fuwei Li   +5 more
doaj   +1 more source

PbrIDD2‐PbrAPX14 Module Functions in the Ethylene‐Mediated Ripening and Senescence Process of Pear Fruit

Plant Biotechnology Journal, Volume 24, Issue 8, Page 4878-4896, August 2026.
ABSTRACT Endogenous H2O2 participated in the ethylene‐dependent ripening and senescence process of horticultural fruit as a secondary messenger; however, the molecular mechanism beneath such a phenomenon has not been fully clarified until recently. By a conjoint analysis of metabolite, enzyme activities, gene expression profiles in AsA‐GSH cycle of ...
Libin Wang, Junpeng Niu, Xiaoyu Tan, Yuhua Xie, Li Jiang, Chen Huan, Xu Zhang, Weiqi Luo, Bing Xie, Xiaopu Ren, Guodong Wang, Yuanyuan Guo, Shaoling Zhang   +12 more
wiley   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

Chemistry – A European Journal, Volume 32, Issue 28, 25 July 2026.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve, Mariana Gomes Manso, Tibo Van Eeckhoorn, Mark E. Light, Bruno Linclau   +4 more
wiley   +1 more source

Synthesis of Nitrogen Heterocycles via Directed Carbonylative C–C Bond Activation of Cyclopropanes

CHIMIA, 2018
This review concentrates on recent developments from our laboratory concerning the Rh-catalyzed carbonylative C–C bond activation of cyclopropanes.
Andrew G. Dalling, John F. Bower
doaj   +1 more source

Stabilisierung des Elektronenakzeptors Hexacyanotrimethylencyclopropan—Strukturelle und Photophysikalische Charakterisierung

Angewandte Chemie, Volume 138, Issue 30, 20 July 2026.
Ein verbessertes Niedertemperatur Syntheseverfahren hat die erste umfassende strukturelle und spektroskopische Charakterisierung von neutralem Hexacyanotrimethylencyclopropan (CN6CP) ermöglicht. Kombinierte IR/Raman‐, UV/Vis und ssNMR‐Analysen liefern tiefere Einblicke in die oxidationszustandsabhängige Ladungsverteilung, die σ‐Aromatizität des ...
Jan P. Soyka, Alok Mahata, Anja Wiesner, Jennifer Hartfiel, Christian E. Halbig, Katharina J. Franke, Ute Resch‐Genger, Biprajit Sarkar, Siegfried Eigler   +8 more
wiley   +1 more source

Stabilizing the Hexacyanotrimethylenecyclopropane Electron Acceptor—Structural and Photophysical Characterization

Angewandte Chemie International Edition, Volume 65, Issue 30, 20 July 2026.
An improved low‐temperature synthesis enables the first comprehensive structural and spectroscopic characterisation of neutral hexacyanotrimethylenecyclopropane (CN6CP). Combined IR/Raman, UV–Vis and ssNMR analyses reveal a deeper understanding of its oxidation‐state‐dependent charge redistribution, σ‐aromaticity of the cyclopropane core, and redox ...
Jan P. Soyka, Alok Mahata, Anja Wiesner, Jennifer Hartfiel, Christian E. Halbig, Katharina J. Franke, Ute Resch‐Genger, Biprajit Sarkar, Siegfried Eigler   +8 more
wiley   +1 more source

Nickel(II)-Catalyzed Formal [3+2] Cycloadditions between Indoles and Donor–Acceptor Cyclopropanes

Molecules
This article describes the development of a nickel-catalyzed regio- and diastereoselective formal [3+2] cycloaddition between N-substituted indoles and donor–acceptor cyclopropanes to synthesize cyclopenta[b]indoles. Optimized reaction conditions provide
Víctor Quezada, Mariña Castroagudín, Felipe Verdugo, Sergio Ortiz, Guillermo Zaragoza, Fabiane M. Nachtigall, Francisco A. A. Reis, Alejandro Castro-Alvarez, Leonardo S. Santos, Ronald Nelson   +9 more
doaj   +1 more source

Manganese(III) Acetate-mediated Oxidative Cyclization of a-Methylstyrene and trans-Stilbene with b-Ketosulfones

Molecules, 2013
A convenient microwave irradiation protocol was utilized for the synthesis of b-ketosulfones 1–5 in good yields. These sulfones reacted with alkenes through a radical oxidative cyclization mediated by Mn(OAc)3.
Patrice Vanelle, Clémence Tabelé, Christophe Curti, Ahlem Bouhlel   +3 more
doaj   +1 more source

Synthetic Ligands of Myeloid C‐Type Lectin Receptors

ChemBioChem, Volume 27, Issue 13, 14 July 2026.
Binding of ligands to C‐type lectin receptors (CLRs) on myeloid cells can lead to an array of cellular responses. Exploitation of these receptors for therapeutic purposes requires high‐affinity ligands. This review surveys the diversity of synthetic ligands of myeloid CLRs in the context of binding, signaling, and downstream effects, as well as ...
James Suri, Bernd Lepenies
wiley   +1 more source