5.1 Aromatic Compounds The term aromatic means “fragrant” (Ancient Greek, aroma). For this reason many fragrant substances were called “aromatic compounds.” Many of these compounds contain a benzene ring (Section 1.6) that is bonded to one or more substituents. Oil of sassafras, oil of win...
Aromaticos compounds containing a condensed with benzene ring with oxygen and process for its preparationSTEPHAN TRAHFRANCOIS GANTZHUGO ZIEGLERRENE ZURFLUH
2 Aromatic Amines, Amides, Hydroxylamines, Nitroso, and Nitro Compounds Aromatic amines contain a nucleophilic amino group that undergoes oxidation and hydroxylation reactions in many chemical and biological systems (Weisburger and Weisburger, 1973). An N-hydroxylation reaction has been shown to...
Aromatic compounds having at least two hydroxyl groups on a benzene ring can be selectively converted to the corresponding monoether by reaction with an alkylating agent in the presence of an alkaline earth hydroxide or oxide in a single phase reaction medium comprising a dipolar aprotic solvent hav...
Polycyclic aromatic compounds are assemblies of benzene rings that share a common side—for example, naphthalene (C10H8). Heterocyclic aromatic compounds contain at least one atom other than carbon within the ring. Examples include pyridine (C5H5N), in which one nitrogen (N) replaces one CH ...
Benzene(C6H6) is the best-known aromaticcompoundand the parent to which numerous other aromatic compounds are related. The sixcarbonsof benzene are joined in a ring, having the planar geometry of a regularhexagonin which all of the C—C bond distances are equal. The six π electrons circulate...
系统标签: compounds aromatic benzene 有机化学 electrophilic benzenes 1TriptyceneFullereneCHAPTER5,AromaticCompounds25.1PrefaceThewordaromaticwasusedtodescribesomefragrantcompoundsintheearlydaysoforganicchemistry(inearly19thcentury).Today,weusethewordaromatictorefertotheclassofcompoundsthatcontainbenzene-like,six-membere...
They are classified as unsaturated if they contain a double or triple bond between any two of the carbon atoms, and they are classed as aromatic if they contain at least one ring, all atoms of which are joined by alternating double and single bonds. Nonaromatic unsaturated compounds are ...
The GIMIC method is a reliable means to determine the degree of aromaticity in a quantitative manner when clearly separated current streams are present. Generally, ring currents of aromatic compounds flow on the molecular plane. The current flow in conventional π-systems is restricted to a two-...
11. An organic electroluminescent device of the type which includes an anode and a cathode, and an organic thin film layer interposed their between, characterized in that said organic thin film layer is a layer constituted to contain the π-conjugated aromatic ring-containing compound of 1-10. ...