Results 11 to 20 of about 46,992 (252)

Synthesis of C₆₀ Fullerene Hexakis Adducts Based on Strained Polycyclic Hydrocarbons and Their Application in Organic Electronics

Chemistry Proceedings, 2023
Using the Bingel–Hirsch reaction, new hexakis methanofullerenes containing strained polycyclic hydrocarbons were synthesized. Organic field-effect transistors were manufactured based on the obtained compounds.
Arslan R. Akhmetov, Rishat I. Aminov, Zarema R. Sadretdinova, Renat B. Salikhov, Ilnur N. Mullagaliev, Timur R. Salikhov   +5 more
doaj   +1 more source

Polycyclic Compounds Affecting Electrical Tree Growth in Polypropylene Under Ambient Temperature

IEEE Access, 2020
Polypropylene (PP) has great potential to be used as recyclable high-voltage direct current (HVDC) cable insulation material. Electrical tree is the key factor that leads to cable insulation failure and limits the increase of HVDC transmission voltage ...
Lewei Zhu, Boxue Du, Zhonglei Li, Hongna Li, Kai Hou   +4 more
doaj   +1 more source

A New Macrodiolide and Two New Polycyclic Chromones from the Fungus Penicillium sp. SCSIO041218

Molecules, 2019
A new macrodiolide, mangrovlide A (1) and two new polycyclic chromones, penixanthones C (2) and D (3), as well as four other known compounds (4−7), have been isolated from the mangrove sediment derived fungus Penicillium sp.
Jingxia Huang, Jianglian She, Xiliang Yang, Juan Liu, Xuefeng Zhou, Bin Yang   +5 more
doaj   +1 more source

MONITORING OF POLYCYCLIC AROMATIC HYDROCARBONS IN PRUNUS SPINOSA TREE COMPONENTS FROM CLUJ-NAPOCA AREA, ROMANIA

Agricultura, 2022
Polycyclic aromatic hydrocarbons (PAHs) occur as contaminants in different types of food mainly as a result of environmental pollution, food packaging and processing. The levels observed in food are determined by the source of the contamination.
Babalau-Fuss Liliana Vanda, Kovacs Eniko, Becze Anca   +2 more
doaj  

Development of new chiral auxiliary from the Diels-Alder adduct endo-tricyclo[6.2.1.02,7] undeca-4 ,9-dien-3 ,6-dione

Orbital: The Electronic Journal of Chemistry, 2012
Stereochemistry control is very important in organic synthesis and it is a basic challenge in asymmetric synthesis. An approach widely used is making use of chiral auxiliary compounds.
Suély Copini, Felícia Megumi Ito, Camila C. Ungari, Dênis P. Lima, Roberto Silva Gomes, Adilson Beatriz   +5 more
doaj   +1 more source

Enantioselective synthesis of tricyclic amino acid derivatives based on a rigid 4-azatricyclo[5.2.1.02,6]decane skeleton

Beilstein Journal of Organic Chemistry, 2009
An enantioselective route to four tricyclic amino acids and N-tosylamides, composed of a central norbornane framework with a 2-endo,3-endo-annelated pyrrolidine ring and a 5-endo-C1 or -C2 side chain, has been developed. A key intermediate was the chiral,
Matthias Breuning, Tobias Häuser, Christian Mehler, Christian Däschlein, Carsten Strohmann, Andreas Oechsner, Holger Braunschweig   +6 more
doaj   +1 more source

3,10,14,21-Tetrakis(4-methoxyphenyl)pentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,13,15(20),16,18-decaen-12-one chloroform monosolvate

Acta Crystallographica Section E, 2014
The asymmetric unit of the title compound, C49H36O6·CHCl3, contains half an organic molecule, the complete molecule being generated by the operation of a crystallographic twofold rotation axis, and half a highly disordered chloroform molecule.
S. Gopinath, P. Narayanan, K. Sethusankar, Meganathan Nandakumar, Arasambattu K. Mohanakrishnan   +4 more
doaj   +1 more source

Antimycobacterial Activity, Synergism, and Mechanism of Action Evaluation of Novel Polycyclic Amines against Mycobacterium tuberculosis

Advances in Pharmacological and Pharmaceutical Sciences, 2021
Mycobacterium tuberculosis has developed extensive resistance to numerous antimycobacterial agents used in the treatment of tuberculosis. Insufficient intracellular accumulation of active moieties allows for selective survival of mycobacteria with drug ...
Erika Kapp, Jacques Joubert, Samantha L. Sampson, Digby F. Warner, Ronnett Seldon, Audrey Jordaan, Margaretha de Vos, Rajan Sharma, Sarel F. Malan   +8 more
doaj   +1 more source

Determinação dos hidrocarbonetos saturados e policíclicos aromáticos presentes no material particulado da atmosfera amazônica Chemical composition of aerosol collected in the amazon forest

Química Nova, 1998
It was identified and quantified several organic compounds in the atmosphere of a site into Amazon Basin with high impact of biomass burning emission.
Pérola de Castro Vasconcellos, Paulo Eduardo Artaxo, Paulo Ciccioli, Angelo Cecinato, Enzo Brancaleoni, Massimiliano Frattoni   +5 more
doaj   +1 more source

New Rigid Polycyclic Bis(phosphane) for Asymmetric Catalysis

Molecules, 2019
A simple, highly efficient synthesis of a series of novel chiral non-racemic rigid tetracyclic phosphorus ligands, applicable in important chemical asymmetric transformations, was performed. In a tandem cross-coupling/C-H bond activation reaction, a well-
K. Michał Pietrusiewicz, Katarzyna Szwaczko, Barbara Mirosław, Izabela Dybała, Radomir Jasiński, Oleg M. Demchuk   +5 more
doaj   +1 more source