Noun1.benzene ring- a closed chain of 6 carbon atoms with hydrogen atoms attached benzene formula,benzene nucleus,Kekule formula benzene,benzine,benzol- a colorless liquid hydrocarbon; highly inflammable; carcinogenic; the simplest of the aromatic compounds ...
Safina, L, Selivanova, G, Bagryanskaya, I, Shteingarts, V (2009) Reaction of quinolines fluorinated at the benzene ring with nitrogen-centered nucleophiles. Russ Chem Bull Int Ed 58: pp. 1049-1061SAFINA L Y,SELIVANOVA G A,YU I B,et al.Reaction of quinolines fluorinated at the ...
Your question is very general, and its hard to formulate a simple answer. Something I've noticed is pharmaceuticals often (but not always) contain multiple fused benzine rings, often with nitrogen atoms in the ring. Something to help you understand it is how these drugs interact with the body...
Phenoxazine (40; X = O, Y = NH) probably has coplanar benzene rings, according to an early study 〈40MI20100〉, with a pyramidal nitrogen atom. When the central ring is rendered aromatic by oxidation (in the phenoxazinium and phenothiazinium ions (41; X = O and S), respectively), ...
in each ring, the rings having 2 common atoms one of which is a nitrogen atom, and the other of which is a carbon atom, the carbon atom being covalently bonded to the nitrogen atom, a heterosulphur atom in each ring and the sulphur atom between the heterocyclic ring moiety and the ...
Benzene is a widely used commodity chemical, which is currently produced from fossil resources. Lignin, a waste from lignocellulosic biomass industry, is the most abundant renewable source of benzene ring in nature. Efficient production of benzene from l
A quantitative study on local aromaticity based on n-center electron delocalization indices, n being the number of atoms in the ring, is performed on a ser... M Mandado,N Otero,RA Mosquera - 《Tetrahedron》 被引量: 75发表: 2006年 Azabenzenes (azines) The nitrogen derivatives of benzene ...
ring. Examples includepyridine(C5H5N), in which onenitrogen(N) replaces one CH group, andpurine(C5H4N4), in which two nitrogens replace two CH groups. Heterocyclic aromatic compounds, such asfuran(C4H4O),thiophene(C4H4S), andpyrrole(C4H4NH), contain five-membered rings in which oxygen (O...
in benzene or its homologues, is favored by the presence of a catalyzer, e.g., iodine, phosphorus, iron; (2) with concentrated HNO3, to form nitrobenzene, C6H5NO2; 1,3- dinitrobenzene, C6H4(NO2)2 (1,3), 1,3,5-trinitrobenzene, C6H3(NO2)3 (1,3,5); (3) with concentrated...
In an attempt to restrict the conformational freedom of the alkyl side-chain of the prototype BCNAs Cf1368 and Cf1369, an aromatic ring system (phenyl) was introduced in the side-chain. In particular, a variety of p-alkylphenyl-BCNAs have been synthesized and evaluated for anti-VZV activity...