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Aromatic group

At Argon. Sometimes used as an abbreviation for an aromatic group. [Pg.40]

Apart from these simple silanes, derivatives witli aromatic groups at different places in tire chain have also been investigated [136, 137], It was found tliat tire average tilt angle of tliese molecules depends on tire specific functional entities contained in tire chains. It is likely tliat apart from packing considerations—important for bulky groups, for example—otlier factors also influence tire resulting tilt. [Pg.2624]

Tiiiman N, Uiman A and Eiman J F 1990 A novei seif-assembied monoiayer fiim containing a suifone-substituted aromatic group Langmuir 6 1512-8... [Pg.2636]

For the selection of descriptors, GA simulated evolution of a population. Each individual of the population represents a subset of descriptors and is defined by a chromosome of binary values. The chromosome has as many genes as there are possible descriptors (92 for the aromatic group, 119 for non-rigid aliphatic,... [Pg.527]

B) Picrates. Very useful for ethers containing an aromatic group. [Pg.397]

Apparently, 4.54 is extremely reluctant to undergo a retro Mannicli reaction. Riviere demonstrated that this behaviour is not unusual for (3-amino ketones. From the study of a large number of Mannich adducts. Riviere concludes that the retro Mannich reaction requires an aromatic group next to the carbonyl functionality. Qearly, 4.54 lacks this arrangement. [Pg.118]

Research activities in the area of PODs containing aromatic groups have been centered around the production of highly processible, soluble, and thermally stable polymers. In this particular class of PODs, the imide-and phenylene-containing backbones have been widely explored. [Pg.534]

In order for dipole—dipole and dipole-iaduced dipole iateractioas to be effective, the molecule must coataia polar groups and/or be highly polarizable. Ease of electronic distortion is favored by the presence of aromatic groups and double or triple bonds. These groups frequently are found ia the molecular stmcture of Hquid crystal compouads. The most common nematogenic and smectogenic molecules are of the type shown ia Table 2. [Pg.198]

Cosurfactant requirements can be minimized usiag a surfactant having a short-branched hydrophobe or a branched-alkyl substituent on an aromatic group (232,234) and a long ethoxy group chain (234). Blends of surfactants optimized for seawater or reservoir brine salinity include linear alkyl xylene sulfonate—alcohol ether sulfate mixtures (235). [Pg.194]

Diarylamines are compounds that have two aromatic groups and one hydrogen atom attached to nitrogen. Diphenyl amine (DPA), or... [Pg.242]

A classification based first on ion specificity, then on stmctural features has been suggested for the polyethers (7). Another method uses the presence of unsaturation or of aromatic groups in the molecular skeleton (8). In this review the compounds are classified based on the number of carbons in the backbone according to the numbering system proposed in reference 9. The carbon backbone or skeleton refers to the longest chain of contiguous carbons between the carboxyl group and the terminal carbon. [Pg.166]

In the presence of excess acid, a sulfonyl chloride group (—SO2CI) can be attached to an aromatic group, ie, chlorosulfonation can occur,... [Pg.86]

For alkylbenzenes, nitrobenzenes, halogenated benzenes and for secondary or tertiary amines where at least one aromatic group is connected to an amino nitrogen, add the following corrections for each aromatic nuclei is. If N < 16, increase AN by 0.60 if N > 16, increase AN by 3.055 — 0.161N for each aromatic group. For any N, increase AB by (—140.04 + 13.869 ). [Pg.410]

With H2/Pd-C, the normal conditions for benzyl group removal, it is difficult to remove the benzyl group on histidine without also causing reduction of other aromatic groups that may be present. ... [Pg.390]

Residue 189 is at the bottom of the specificity pocket. In trypsin the Asp residue at this position interacts with the positively charged side chains Lys or Arg of a substrate. This accounts for the preference of trypsin to cleave adjacent to these residues. In chymotrypsin there is a Ser residue at position 189, which does not interfere with the binding of the substrate. Bulky aromatic groups are therefore preferred by chymotrypsin since such side chains fill up the mainly hydrophobic specificity pocket. It has now become clear, however, from site-directed mutagenesis experiments that this simple picture does not tell the whole story. [Pg.213]

One of the most common modes of characterization involves the determination of a material s surface chemistry. This is accomplished via interpretation of the fiag-mentation pattern in the static SIMS mass spectrum. This fingerprint yields a great deal of information about a sample s outer chemical nature, including the relative degree of unsaturation, the presence or absence of aromatic groups, and branching. In addition to the chemical information, the mass spectrum also provides data about any surface impurities or contaminants. [Pg.552]

The common feature of the p-phenylene group stiffens the polymer backbone so that the polymers have higher TgS than similar polymers which lack the aromatic group. As a consequence the aromatic polymers tend to have high heat deformation temperatures, are rigid at room temperature and frequently require high processing temperatures. [Pg.584]

Originally the chemical industry was inorganic in the 1960s organic chemicals (means they contain carbon) came into prominence with the compounds benzene, phenol, ethylene, and vinyl chloride. The organic chemicals benzene, phenol, toluene, and the xylenes compose the aromatic group. [Pg.269]

Hydrolytic cleavage of single carbon-fluorine bonds generally requires activation by a neighboring group such as a carbonyl, sulfonyloxy, or olefinic bond or a negatively substituted aromatic group. [Pg.422]


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Activated alkyl groups and polynuclear aromatics

Activating group (aromatic acidity and

Activating group (aromatic explanation

Activating groups in electrophilic aromatic

Activating groups, aromatic substitution

Amination Aromatic nitro groups

Amine groups aromatic

Applicability of Force Fields to Reproduce Ab Initio Noncovalent Interactions Involving Aromatic Groups

Aromatic Compounds Containing Two or More Unlike Groups

Aromatic Compounds with Strongly Electron-Withdrawing Groups

Aromatic End Groups

Aromatic Ketones Containing One Isobutyryl Group

Aromatic Ketones Containing One Pivaloyl Group

Aromatic Linked by Aliphatic or Functional Group

Aromatic Nitro Compounds with Other Functional Groups

Aromatic Polyketones Containing At Least One Propionyl Group

Aromatic Polyketones Containing Only Isobutyryl Groups

Aromatic Polyketones Containing Only Pivaloyl Groups

Aromatic acids electron-donating groups

Aromatic acyl group

Aromatic alkyl groups, oxidation

Aromatic amines electron-withdrawing groups

Aromatic carbonyl groups, reduction

Aromatic compound group influencing reactivity

Aromatic compounds group frequencies

Aromatic compounds ortho,para-directing groups

Aromatic compounds, activation groups

Aromatic contributions, methyl groups

Aromatic displacement, nitro group

Aromatic ether group

Aromatic formyl groups

Aromatic functional groups

Aromatic group bromination

Aromatic group fluorescence

Aromatic groups, formation by eliminatio

Aromatic groups, hydrophobic

Aromatic groups, hydrophobic amino acids

Aromatic hydrocarbon-polar group

Aromatic hydrocarbons directing groups

Aromatic hydrocarbon—polar group interaction

Aromatic hydrocarbon—polar group interaction compounds

Aromatic nitro group, reduction

Aromatic pendant group polymers, localized

Aromatic pendant group polymers, relaxation

Aromatic polyamides and polyhydrazides containing the oxalyl group

Aromatic polyethers having phosphine oxide groups

Aromatic rings without carbonyl groups

Aromatic rings, neighbouring group

Aromatic side groups

Aromatic substituent groups

Aromatic, activating groups

Aromaticity exocyclic groups

Aromaticity/antiaromaticity Group 1 metal atoms

Aromatics carbonyl groups + acid

Aromatization groups

Branches of aromatic groups

Carbonyl group aromatic substitution

Cyano group aromatic substitution

Deactivating group (aromatic

Deactivating group (aromatic explanation

Deactivating groups in electrophilic aromatic

Deactivating groups, aromatic nitro

Deactivating groups, aromatic substitution

Deactivating groups, in electrophilic aromatic substitution

Electron withdrawing groups aromatic fluonne by nucleophiles

Electron withdrawing groups, effect aromatic chemical shifts

Electron-withdrawing groups aromatic substitution, carbanion

Electrophilic aromatic scale for carbonyl groups

Electrophilic aromatic substitution blocking groups

Electrophilic aromatic substitution nitro group

Electrophilic aromatic substitution, acylation ortho-para directing groups

Electrophilic aromatic substitutions meta-directing groups

Electrophilic aromatic substitutions ortho—para-directing groups

Ester alkyl/aromatic group

Functional group addition aromatic compounds

Functionalization methods aromatic side groups

Group 2 - Aromatic and Heterocyclic Protons

Group frequencies aromatic

Group transfer reactions aromatization

Groups, Olefins, and Aromatic Hydrocarbons

Heterocyclic aromatic compounds groups

Hydroxylamines aromatic nitro groups

Leaving group in nucleophilic aromatic substitutio

Leaving groups aromatic substitution

Leaving groups in aromatic nucleophilic

Leaving groups in nucleophilic aromatic substitution

Leaving groups, reactivity in nucleophilic aromatic substitution

Methods for the introduction of a hydroxyl group into an aromatic ring

Methyl groups aromatization with

Networks from Aromatic Linear Chains Created by Reacting Backbone Diacetylene or Pendant Acetylene Groups

Nitrenes aromatic groups

Nitro group in nucleophilic aromatic substitutio

Nitro groups, aromatic

Nitro groups, aromatic hydrogenation

Nitro groups, aromatic nickel

Nitro groups, aromatic partial

Nitro groups, aromatic rings

Nitro groups, aromatic selectivity

Nitro groups, aromatic with cyclizations

Nitro groups, aromatic with rearrangements

Nucleophilic aromatic nitro-group displacement

Nucleophilic aromatic substitution activating groups, effects

Nucleophilic aromatic substitution leaving groups

Nucleophilic aromatic substitution nitro-group activated

Nucleophilic aromatic substitution nitro-group displacement

Other aromatic polymers containing p-phenylene groups

Oxidation of aromatic methyl groups

Pendent aromatic group

Phenyl group, interaction with aromatic structures

Podands with Aromatic Donor End Groups

Poly polarizable aromatic groups

Polycyclic aromatic compounds: group

Polyesters with aromatic groups in the backbone

Polymers bearing pendant aromatic groups

Polymers with aromatic amine groups

Polymers, unsaturated aromatic groups

Reduction of aromatic nitro groups

Reductions of Heterocyclic N-Oxides and Aromatic Nitro Groups

Replacement of aromatic amino groups

Replacement of aromatic amino groups fluorine

Replacement of aromatic chlorine atoms, by amino groups using

Rotation of Aromatic Groups

Side polymers with aromatic groups

Strategies for Aromatic Synthesis Order of Group Substitution

Substitution, aromatic, electrophilic groups

Sulfonate group reactive aromatic

Trifluoromethanethio group aromatic nng

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