Results 1 to 10 of about 28,367 (257)

Synthetic Approaches for C-N Bonds by TiO2 Photocatalysis

Frontiers in Chemistry, 2019
Nitrogen-containing organic compounds possess the most important status in drug molecules and agricultural chemicals. More than 80% currently used drugs have at least a C-N bond.
Dongge Ma, Shan Zhai, Yi Wang, Anan Liu, Chuncheng Chen   +4 more
doaj   +1 more source

4,12-Diselena-5,6,13,14-tetraazatricyclo[9.3.0.03,7]tetradeca-1(11),3(7),5,13-tetraene

IUCrData
In the title compound, C8H8N4Se2, two almost planar 1,2,3-selenadiazoles are annulated to a cycloocta-1,4-diene with a boat–chair conformation, giving the molecule a butterfly shape.
Dieter Schollmeyer, Heiner Detert
doaj   +1 more source

(2Z)-2-(4-Chlorobenzylidene)-4-[2-(2-oxooxazoliden-3-yl)ethyl]-3,4-dihydro-2H-1,4-benzothiazin-3-one

IUCrData, 2017
In the title molecule, C20H17ClN2O3S, the oxazolidine ring is oriented towards the benzothiazine moiety so that the centroid of the former is ca 5.05 Å from the sulfur atom of the latter.
Mohamed Ellouz, Nada Kheira Sebbar, Mohammed Boulhaoua, El Mokhtar Essassi, Joel T. Mague   +4 more
doaj   +1 more source

N-[(1Z)-Cyclodec-5-yn-1-ylidene]hydroxylamine

IUCrData
The crystal structure of cyclodecynone oxime, C10H15NO, is reported. Two twist-boat-shaped cycloalkynes are centrosymmetrically connected via oxime hydrogen bridges. Deformation of the alkyne unit results from ring strain.
Heiner Detert, Dieter Schollmeyer
doaj   +1 more source

Syn-Ethyl 1-hydroxy-7-methoxy-2,3-dihydro-1H-pyrrolo[3,4-b]quinolone-3-carboxylate HCl Salt

Molbank, 2015
This short note describes a one-step synthesis of the title compound from commercially available starting materials and reports its full spectroscopic characterization data.
Marcus Baumann, Ian R. Baxendale
doaj   +1 more source

Superelectrophilic carbocations: preparation and reactions of a substrate with six ionizable groups

Beilstein Journal of Organic Chemistry, 2019
A substrate has been prepared having two triarylmethanol centers and four pyridine-type substituent groups. Upon ionization in the Brønsted superacid CF3SO3H, the substrate undergoes two types of reactions.
Sean H. Kennedy, Makafui Gasonoo, Douglas A. Klumpp   +2 more
doaj   +1 more source

Dichloridobis(4-methylbenzyl)(1,10-phenanthroline-κ2N,N′)tin(IV)

Acta Crystallographica Section E, 2010
The tin(IV) atom in the title compound, [Sn(C8H9)2Cl2(C12H8N2)], is chelated by the N-heterocycle and bonded to two C atoms and two chloride ions in an SnC2Cl2N2 octahedral coordination environment with the C atoms trans to each other.
Seik Weng Ng, Kong Mun Lo, Thy Chun Keng
doaj   +1 more source

Recent advances in the electrochemical construction of heterocycles

Beilstein Journal of Organic Chemistry, 2014
Due to the fact that the major portion of pharmaceuticals and agrochemicals contains heterocyclic units and since the overall number of commercially used heterocyclic compounds is steadily growing, heterocyclic chemistry remains in the focus of the ...
Robert Francke
doaj   +1 more source

Synthesis of Polyhedral Borane Cluster Fused Heterocycles via Transition Metal Catalyzed B-H Activation

Molecules, 2020
Aromatic heterocycles are ubiquitous building blocks in bioactive natural products, pharmaceutical and agrochemical industries. Accordingly, the carborane-fused heterocycles would be potential candidates in drug discovery, nanomaterials ...
Ke Cao, Cai-Yan Zhang, Tao-Tao Xu, Ji Wu, Xin-Yu Wen, Wen-Jun Jiang, Mao Chen, Junxiao Yang   +7 more
doaj   +1 more source

Synthesis and Evaluation of Selected Benzimidazole Derivatives as Potential Antimicrobial Agents

Molecules, 2015
A library of 53 benzimidazole derivatives, with substituents at positions 1, 2 and 5, were synthesized and screened against a series of reference strains of bacteria and fungi of medical relevance.
Fatmah A. S. Alasmary, Anna M. Snelling, Mohammed E. Zain, Ahmed M. Alafeefy, Amani S. Awaad, Nazira Karodia   +5 more
doaj   +1 more source