Results 21 to 30 of about 5,075 (257)

Synthesis of Cyano-Benzylidene Xanthene Synthons Using a Diprotic Brønsted Acid Catalyst, and Their Application as Efficient Inhibitors of Aluminum Corrosion in Alkaline Solutions

Molecules, 2022
Novel cyano-benzylidene xanthene derivatives were synthesized using one-pot and condensation reactions. A diprotic Brønsted acid (i.e., oxalic acid) was used as an effective catalyst for the promotion of the synthesis process of the new starting xanthene–
Mohammed A. Amin, Gaber A. M. Mersal, Morad M. El-Hendawy, Abdallah A. Shaltout, Ali Badawi, Johan Boman, Adil A. Gobouri, Murat Saracoglu, Fatma Kandemirli, Rabah Boukherroub, Jacek Ryl, Mohamed E. Khalifa   +11 more
doaj   +1 more source

Ag Nanoparticles Stabilized on Cyclodextrin Polymer Decorated with Multi-Nitrogen Atom Containing Polymer: An Efficient Catalyst for the Synthesis of Xanthenes

Molecules, 2020
In attempt to broaden the use of cyclodextrin polymer for catalytic purposes, a novel covalent hybrid system was prepared through growth of multi-nitrogen atom containing polymer (PMelamine) derived from reaction of ethylenediamine and 2,4,6-trichloro-1 ...
Samahe Sadjadi, Fatemeh Ghoreyshi Kahangi, Masoumeh Dorraj, Majid M. Heravi   +3 more
doaj   +1 more source

Palladium-copper catalyzed decarboxylation/de-cycloalkanonylative coupling reaction to synthesize 9,9-diaryl-xanthenes

, 2023
An efficient palladium-copper catalyzed regioselective C–C bond cleavage/C–H bond activation/C–C bond reformation reaction to synthesize 9,9-diaryl-xanthenes has been developed.
Lijun Wang (176511), Guodong Shen (3199908), Shan Zhang (431282), Zeyou Wang (505549), Yongjun Zhang (124423), Zixuan Zhang (6957035), Xiaoqing Zeng (1540453), Yalin Zhang (525749)   +7 more
core   +1 more source

Fe3o4 nanoparticles: A highly efficient and easily reusable catalyst for the one-pot synthesis of xanthene derivatives under solvent-free conditions [PDF]

Journal of the Serbian Chemical Society, 2013
Magnetically separable Fe3O4 nanoparticles supply environmentally friendly procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene and 1,8-dioxo-octahydro-xanthene derivatives.
Ghasemzadeh Ali Mohammad, Safaei-Ghomi Javad, Zahedi Safura   +2 more
doaj   +1 more source

A Convenient Preparation of Xanthene Dyes. [PDF]

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Youjun, Yang, Jorge O, Escobedo, Alexander, Wong, Corin M, Schowalter, Michael C, Touchy, Lijuan, Jiao, William E, Crowe, Frank R, Fronczek, Robert M, Strongin   +8 more
openaire   +2 more sources

Drastic Impact of Donor Substituents on Xanthenes in the PDT of Glioblastoma [PDF]

JACS Au
O. Karaman, E. Yesilcimen, M. Forough, Z. Elmazoglu, G. Gunbas   +4 more
doaj   +2 more sources

Synthesis of Xanthones, Thioxanthones and Acridones by a Metal-Free Photocatalytic Oxidation Using Visible Light and Molecular Oxygen

Molecules, 2021
9H-Xanthenes, 9H-thioxanthenes and 9,10-dihydroacridines can be easily oxidized to the corresponding xanthones, thioxanthones and acridones, respectively, by a simple photo-oxidation procedure carried out using molecular oxygen as oxidant under the ...
Alejandro Torregrosa-Chinillach, Rafael Chinchilla   +1 more
doaj   +1 more source

Design, Synthesis and Antiviral Potential of 14-Aryl/Heteroaryl-14<em>H</em>-dibenzo<em>[a,j]</em>xanthenes Using an Efficient Polymer-Supported Catalyst

Molecules, 2012
Polyethyleneglycol bound sulfonic acid (PEG-OSO₃H), a chlorosulphonic acid-modified polyethylene glycol was successfully used as an efficient and eco-friendly polymeric catalyst in the synthesis of 14-aryl/heteroaryl-14<em>H ...
Ola Lasekan, Mungara Anil Kumar, Palanisamy Arulselvan, Shaik Ibrahim Khalivulla, Balam Satheesh Krishna, Kalla Reddi Mohan Naidu   +5 more
doaj   +1 more source

Electrochemical Regioselective Cross-Dehydrogenative Coupling of Indoles with Xanthenes

, 2021
An electrochemical cross-dehydrogenative coupling of indoles with xanthenes has been established at room temperature. This coupling reaction could proceed in the absence of any catalyst or external oxidant, and generate the indole derivatives in moderate
Pinhua Li (1457875), Hongji Li (1504102), Tao Miao (1652005), Hongqiang Liu, Hongqiang Liu (1923511), Hongji Li, Hui Gao (169623), Xinyu Chen, Tao Miao, Pinhua Li, Hui Gao, Xinyu Chen (47670)   +11 more
core   +1 more source

The Synthesis of Substituted Tetrahydro‐1H‐xanthen‐1‐ones and Xanthenes.

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Mahesh L. Patil, Hanumant B. Borate
openaire   +1 more source