| 词汇 | example_english_benzene-ring |
| 释义 | Examples of benzene ringThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Polycyclic aromatic hydrocarbons, a group of molecules consisting of a number of fused benzene rings, are major environmental contaminants. This breakthrough came about through the availability of the benzenering theory. Closely related to the benzenering were its condensed forms, naphthalene and anthracene. Isoquinoline and quinoline are benzopyridines, which are composed of a benzenering fused to a pyridine ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It consists of a benzenering substituted with an amino group and a carboxylic acid. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its structure consists of a benzenering "para" -substituted with a methyl group and an isopropyl group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It involved the novel introduction of a malonyl equivalent into a highly sterically hindered position of a benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The etizolam molecule differs from a benzodiazepine in that the benzenering has been replaced by a thiophene ring, making the drug a thienodiazepine. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are four peaks between 130-140 ppm from the carbons in the benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The main differences of the synephrine isomers compared for example to the ephedrines are the hydroxy-substitutions on the benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Starlicide is a small molecule in which a central benzenering is modified by amine, chloro and methyl substituents in a specific pattern. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The configuration of six carbon atoms in aromatic compounds is known as a benzenering, after the simplest possible such hydrocarbon, benzene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In-methylcyclophanes in particular have a methyl group in proximity to a benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its chemical structure consists of a benzenering substituted with a hydroxy group and a propenyl group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The benzenering of a biologically active compound may often be replaced by a thiophene without loss of activity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The clotiazepam molecule differs from most other benzodiazepines in that the benzenering has been replaced by a thiophene ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Realizing each carbon has 2p electrons, each carbon donates an electron into the delocalized ring above and below the benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The compound consists of a benzenering with an aldehyde and a methoxy group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In the latter case the anilinium cation is formed and the lone pair is no longer available for conjugation with the benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Though the benzenering is stabilized by aromaticity, the cyclobutadiene portion has a destabilizing effect. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The benzimidazole drugs share a common molecular structure, triclabendazole being the exception in having a chlorinated benzenering but no carbamate group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This molecule has one central benzenering surrounded by six alkyl chains. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The methyl group can be rotated either at 5 or 13 out of the plane of the benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This colourless viscous liquid consists of a benzenering with a pair of adjacent thiol groups. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has a bicyclic structure, consisting of a six-membered benzenering fused to a five-membered nitrogen-containing pyrrole ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alkyl groups on a benzenering oxidized to the carboxylic acid, regardless of its chain length. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Next, a ring closing reaction occurs by the bond from the aromatic benzenering attacking the partially positive carbonyl to form a five-member ring (5). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since this process destroys the aromaticity of the benzenering, the reverse reaction is highly favoured. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The presence of two activating groups also make the benzenering highly reactive toward electrophilic aromatic substitution. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its chemical structure consists of a benzenering substituted with a methoxy group and a propenyl group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its chemical structure, shown in the table at right, features two hydroxyl groups bonded to a benzenering in a "para" position. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This compound has two bromine atoms (bromo substituents) off the central benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Cyclohexylacetone is closely related to phenylacetone being phenylacetone with the benzenering replaced with a cyclohexane ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It consists of a benzenering bound to an azocine ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has a bicyclic structure, consisting of a six-membered benzenering fused to a five-membered nitrogen-containing ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It features a benzenering bound to a piperidine ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The carbonyl is then reformed and a double bond in the benzenering attacks the carbon atom in the pronated imine cation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The molecule consists of two dimethylarsino groups attached to adjacent carbon centers of a benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All three are aryl amines whose chemical structures are similar to aniline except that a methyl group is substituted onto the benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Varying the choice of the substituted phenylacetic acid imino ether affords compounds with a diversity of substituents on the benzenering at the 2- position. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It resembles a benzenering, except that two adjacent carbons are replaced by nitrogen and boron, respectively. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In heterocycles, carbon atoms in the benzenering are replaced with other elements. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is composed of a benzenering fused with a cyclopentene ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. But compound 8 proved difficult to produce, presumably because of the ease with which water can eliminate across the benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The benzo prefix indicates the benzenering fused onto the diazepine ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It consists of a benzenering substituted with five chlorine atoms. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In this compound the deviation from planarity is 13 for the benzenering and 17 for the bridgehead carbons. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The presence of a benzenering with an attached amine group makes it a phenethylamine, a family that includes numerous psychoactive drugs. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In terms of its structure, the molecule consists of two chlorine atoms substituted for hydrogen at opposing sites on a benzenering. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The core of the arene is a benzenering and the periphery consists of alternating benzene rings (3) and cyclopentadiene rings (3). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its molecular structure is composed of a diazepine connected to a benzenering and a pyridine ring, the benzene ring having a bromine atom attached to it. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, the electron-rich system above and below the benzenering hosts a partial negative charge. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The isomers are distinguished by the designations "ortho" - ("o" -), "meta" - ("m" -), and "para" - ("p" -), which specify to which carbon atoms (of the benzenering) the two methyl groups are attached. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The aromatic amines, such as aniline, have their lone pair electrons conjugated into the benzene ring, thus their tendency to engage in hydrogen bonding is diminished. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a highly conjugated system, as the pi-cloud on the benzenering, the p-orbitals on the carbonyl atoms and the lone pairs on the oxygens are all conjugated. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The molecule consists of a substituted benzenering, hence is classed as aromatic, with two adjacent, or "ortho-" functional groups, a carboxylic acid and an amine. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In this type of compounds the cyclobutane ring would force 90 angles on the carbon atoms connected to the benzenering where they ordinarily have angles of 120. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The enzyme catalyses the "o" -hydroxylation of monophenols (phenol molecules in which the benzene ring contains a single hydroxyl substituent) to "o" -diphenols (phenol molecules containing two hydroxyl substituents). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Studies from practolol showed that moving the acylamino group to meta or ortho positions, on the benzenering, caused a loss of selectivity but not loss of the -blockade itself. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Therefore, there was an increase in the degree of polycondensation as suggested by new band at 14.2 mm, which can be assigned to three-substituted benzene rings. Subsequent treatment with an acid results in the addition of a nucleophile to the benzenering at a site "ortho" (cine), "meta" or "para" (tele) to the "ipso" carbon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Irradiation will hydroxylate benzene rings and who knows what will be produced out of the food. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Most have two benzene rings, and are called dibenzocycloheptenes. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It can be seen as a lattice of benzene rings connected by acetylene bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Benzene rings are a molecular structure of carbon, the basis for all life on earth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In the most significant isomer, fluoren-9-ol or 9-hydroxyfluorene, the hydroxy group is located on the bridging carbon between the two benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another isomer of this compound exists called dibenzoa, fpentalene with one of the benzene rings positioned on the other available pentalene face. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It has a tricyclic structure, consisting of two six-membered benzene rings fused on either side of a five-membered nitrogen-containing ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Fluorene is generally planar; p-orbital overlap at the linkage between its two benzene rings results in conjugation across the molecule. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is an aromatic compound that has two benzene rings fused to a central furan ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is an analogue of imipramine where one of the benzene rings has been replaced with a thiophene ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This particular procedure was most useful for the preparation of benzimidazoles that lacked substituents on the benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. By offsetting one of the benzene rings, the parallel displaced configuration reduces these repulsive interactions and is stabilized. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Steric inhibition of resonance is present only in benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The molecule consists of a cyclopentane ring fused with 5 benzene rings, so another name for it is 5circulene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Longer chain analogues with up to 10 benzene rings are also known. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Electrophilic aromatic substitution reactions are characteristic of aromatic compounds, and are important ways of introducing functional groups onto benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Using a 1,3,4 thiadiazol core and trying different groups or molecules on the benzene rings, several different substances with inhibitory properties were produced. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They both consist of a central coronene molecule surrounded by 6 fused benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Related to thiophene are benzothiophene and dibenzothiophene, containing the thiophene ring fused with one and two benzene rings, respectively. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a polycyclic aromatic hydrocarbon made of five fused benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The benzene rings have been replaced by other aromatic units, such as those based on ferrocene or stabilized cyclobutadiene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Single bonds with hydrogen replace the double bonds in the benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Hexacene is one of a series of linear acenes, the previous one being pentacene (five fused benzene rings) and the next one being heptacene (seven fused benzene rings). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It contains two benzene rings. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The three benzene rings can be drawn as the three outer rings, with the central ring formed by one face of each and the three carboncarbon single bonds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its few radicals are widely expanded along the benzene rings, distinguishing a benzoyloxy group in the ninth carbon and two methyl radicals in carbon five and eleven. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Structurally, pentacene is one of the linear acenes, the previous one being tetracene (four fused benzene rings) and the next one being hexacene (six fused benzene rings). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A non-bonding nitrogen to arene distance of 244 pm is recorded for a pyridinophane and in the unusual superphane the two benzene rings are separated by a mere 262 pm. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Suramin contains eight benzene rings, four of which are fused in pairs (naphthalene), four amide groups (in addition to the urea) and six sulfonic acid groups. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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