Results 41 to 50 of about 82,349 (282)

Porous Phenazine‐bridged Tetraoxa[8]Circulenes for Selective Gold Recovery and Heterogeneous Catalysis

Angewandte Chemie, EarlyView.
Gold recycling from electronic waste using porous materials is an emerging concept to reduce the environmental impact of gold mining. In this work, we report the synthesis of a highly porous phenazine‐derived tetraoxa[8]circulene polymer and its utilization in gold capture and heterogeneous catalysis.
Patrick W. Fritz, Eylül Attar, Timur Ashirov, Krzysztof Piech, Ali Coskun   +4 more
wiley   +2 more sources

2-(2,4-Dichlorophenyl)-9-phenyl-2,3-dihydrothieno[3,2-b]quinoline

Acta Crystallographica Section E, 2009
In the title compound, C23H15Cl2NS, the quinoline system is almost planar [r.m.s. deviation = 0.013 (2) Å]. The phenyl group is disordered over two positions with site occupancies of 0.55 and 0.45, and is oriented in a nearly
K. Balamurugan, D. Narmadha, J. Suresh, S. Perumal, P. L. Nilantha Lakshman   +4 more
doaj   +1 more source

Synthesis, Electrochemical and Spectroscopic Characterization of Selected Quinolinecarbaldehydes and Their Schiff Base Derivatives

Molecules, 2020
A new approach to the synthesis of selected quinolinecarbaldehydes with carbonyl groups located at C5 and/or in C7 positions is presented in this paper in conjunction with spectroscopic characterization of the products.
Jakub Wantulok, Marcin Szala, Andrea Quinto, Jacek E. Nycz, Stefania Giannarelli, Romana Sokolová, Maria Książek, Joachim Kusz   +7 more
doaj   +1 more source

Spectroscopic Properties of Polycyclic Aromatic Compounds. Examination of Nitromethane as a Selective Fluorescence Quenching Agent for Alternant Polycyclic Aromatic Nitrogen Hetero-Atom Derivatives [PDF]

, 1992
Article on the spectroscopic properties of polycyclic aromatic compounds and an examination of nitromethane as a selective fluorescence quenching agent for alternant polycyclic aromatic nitrogen hetero-atom ...
Acree, William, Kimihiro, Hiruta, Langhals, Heinz, Tanga, Mary, Tokita, Sumio, Tucker, Sheryl A.   +5 more
core   +1 more source

Strategies Toward Accessing Enantioenriched (Hetero)Benzo‐Fused 5‐ and 6‐ Membered Rings via Intermolecular Carbometalation

Angewandte Chemie, EarlyView.
The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans, Armaan Grewal, Xavier Abel‐Snape, Mark Lautens   +3 more
wiley   +2 more sources

2-Azidobenzaldehyde-Based [4+2] Annulation for the Synthesis of Quinoline Derivatives

Molecules
Quinoline is a privileged heterocyclic ring which can be found in many drug molecules and bioactive compounds. The development of synthetic methods for making quinoline derivatives continuously attracts the interest of organic and medicinal chemists ...
Xiaofeng Zhang, Miao Liu, Weiqi Qiu, Wei Zhang   +3 more
doaj   +1 more source

8-(Diphenylphosphanyl)quinoline [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
The title compound, C(21)H(16)NP, is a known P-N chelator and various crystal structures of its metal complexes have been reported. However, no crystallographic evidence of the free ligand has been given to date. The phenyl rings are almost orthogonal to one another [dihedral angle = 88.9 (1)°], and they are twisted from the mean plane of the quinoline
Samik Nag, Mihaela Cibian, Garry S. Hanan   +2 more
openaire   +3 more sources

Mechanism of C−F Reductive Elimination from Palladium(IV) Fluorides [PDF]

, 2010
The first systematic mechanism study of C−F reductive elimination from a transition metal complex is described. C−F bond formation from three different Pd(IV) fluoride complexes was mechanistically evaluated.
Benitez, Diego, Furuya, Takeru, Goddard, William A., III, Ritter, Tobias, Strom, Alexandra E., Tang, Pingping, Tkatchouk, Ekaterina   +6 more
core   +2 more sources

Guanidinium quinoline-2-carboxylate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2009
In the structure of the guanidinium salt of quinaldic acid, CH(6)N(3) (+)·C(10)H(6)NO(2) (-), the asymmetric unit contains two independent cations and anions having similar inter-species hydrogen-bonding environments, which include cyclic R(2) (2)(8), R(2) (1)(6) and R(1) (2)(5) associations.
Smith, Graham, Wermuth, Urs
openaire   +4 more sources

Effective degradation of quinoline by catalytic ozonation with MnCexOy catalysts: performance and mechanism

Water Science and Technology
Quinoline inevitably remains in the effluent of coking wastewater treatment plants due to its bio-refractory nature, which might cause unfavorable effects on human and ecological environments.
Jie Zhang, Zhaochang Wu, Ben Dong, Sijie Ge, Shilong He   +4 more
doaj   +1 more source