Results 111 to 120 of about 8,390 (243)

C–H bond functionalizations with palladium(II): intramolecular oxidative annulations of arenes [PDF]

, 2008
Oxidative annulations for the synthesis of carbocycles were developed using a catalytic palladium(II) system. Indoles with pendant olefin tethers were oxidatively cyclized to form annulated products. Electron-rich aromatic systems were also investigated,
Ferreira, Eric M., Stoltz, Brian M., Zhang, Haiming   +2 more
core   +1 more source

Selective Rh(II)‐Catalyzed Intermolecular Oxyamidation and Acid‐Promoted Nucleophilic Cyclization Cascade of Enamides

ChemistryEurope, Volume 4, Issue 6, June 2026.
A structurally diverse series of 1‐amino‐izidine scaffolds was accessed through a cascade process combining rhodium‐catalyzed nitrene‐transfer oxyamidation with subsequent nucleophilic cyclization under acidic conditions, proceeding via an in situ generated iminium intermediate.
Grégory Jestin, Romain Rey‐Rodriguez, Romane Manguin, Pascal Retailleau, Philippe Dauban, Isabelle Gillaizeau   +5 more
wiley   +1 more source

Halocyclization of o-(Alkynyl)styrenes. Synthesis of 3-Halo-1H-indenes [PDF]

, 2010
Junta de Castilla y Leon (BU021A09 and GR-172), Ministerio de Educacion y Ciencia (MEC), FEDER (CTQ2007-61436/BQU and CTQ2009-09949/BQU), MEC (FPU grant), Juan de la Cierva, Ramon y Cajal and "Young Foreign Researchers" (SB2009-0186 ...
Fernández Rodríguez, Manuel A., García García, Patricia, Martínez Cuezva, Alberto, Rashid, Muhammad A., Rodríguez, Félix, Sanz Díez, Roberto   +5 more
core   +1 more source

Three-Component Coupling Reactions of Arynes for the Synthesis of Benzofurans and Coumarins

Molecules, 2014
The domino three-component coupling reaction of arynes with DMF and active methylenes or methines was studied as a highly efficient method for preparing heterocycles.
Eito Yoshioka, Shigeru Kohtani, Hideto Miyabe   +2 more
doaj   +1 more source

Molecular biomarkers and toxic consequences of impact by organic pollution in aquatic organisms [PDF]

, 1994
Organic contaminants are readily bioaccumulated by aquatic organisms. Exposure to and toxic effects of contaminants can be measured in terms of the biochemical responses of the organisms (i.e. molecular biomarkers).
Förlin, L., George, S.G., Livingston, D.R.   +2 more
core  

Light‐Driven [2 + 2] Cycloaddition Strategies for the Synthesis of Cyclobuta[b]indoles and Their Derivatives

ChemPhotoChem, Volume 10, Issue 6, June 2026.
This review surveys the literature on light‐driven dearomative [2+2] cycloadditions of indoles, highlighting their power to access complex cyclobuta[b]indole frameworks. Advances in photocatalysis, sensitizer design, and reaction engineering enable selective and sustainable assembly of strained three‐dimensional architectures, expanding opportunities ...
Maria Chiara Cabua, Davide Moi, Alberto Luridiana, Francesco Secci, Emanuele Cocco   +4 more
wiley   +1 more source

Synthesis of Acylbenzo[b]thiophenes, benzofurans and indoles via intramolecular oxidative cyclization enabled by photocatalytic hydrogen atom transfer (HAT)

Tetrahedron Chem
An efficient strategy for intramolecular oxidative cyclization of 2-alkynylthioanisoles toward 3-acylbenzo[b]thiophenes by photochemical hydrogen atom transfer catalysis has been developed.
Fen-Dou Wang, Jin Jiang, Tiantian Xu, Wen-Chao Yang, Shu-Peng Zhang, Min Wang, Pinhua Li   +6 more
doaj   +1 more source

Synthesis, Photophysical Characterization, and Anticancer Evaluation of Novel Furochromene Derivatives

ChemistryOpen, Volume 15, Issue 6, June 2026.
This is the first study on novel furochromene derivatives. A series of novel furochromen derivatives, namely (2E)‐1‐(6‐hydroxy‐4,7‐dimethoxy‐1‐benzofuran‐5‐yl)‐3‐arylprop‐2‐en‐1‐ones 4a–c, were synthesized via the Knoevenagel condensation of 6‐hydroxy‐4,7‐dimethoxybenzofuran‐5‐ylethanone 2 with various aromatic aldehydes.
Amal Rabahi, Mustapha Mounir Bouhenna, Hasnia Abdeldjebar, Massinissa Baymout, Malika Makhloufi‐Chebli, Walter Luyten, Hamdi Bendif, Anis Ahmad Chaudhary, Walid Elfalleh, Stefania Garzoli   +9 more
wiley   +1 more source

Potassium silicate improves cellular sodium homeostasis in wheat (Triticum aestivum L.) cultivars differing in salt resistance

Plant Biology, Volume 28, Issue 4, Page 1043-1051, June 2026.
Potassium silicate can decrease the uptake of sodium (Na+) into wheat cells by affecting the Na+ uptake channels and increasing ion homeostasis. Abstract Salinity causes negative impacts on crops. We investigated the effect of potassium silicate (K2SiO3) on the cytosolic uptake of sodium, [Na+]cyt, in mesophyll protoplasts of wheat cultivars differing ...
M. T. Javed, S. H. Morgan, S. Lindberg
wiley   +1 more source

Sustainable Microwave‐Enhanced Synthesis of 2‐Substituted Benzofurans From o‐Alkynylanisoles in Acidic Deep Eutectic Solvents

European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
A microwave‐enhanced sustainable and versatile approach to substituted benzofurans from 2‐alkynylanisoles enabled by an active Brønsted acidic deep eutectic solvent. The research on alternative media for organic transformations remains a highly demanding topic.
Alessandra Gritti, Angelica Sita, Mehri Goudarzi, Stefano Fedeli, Elison Lepore, Donatella Nava, Matteo Tiecco, Alessandro Caselli, Valentina Pirovano, Giorgio Abbiati   +9 more
wiley   +1 more source