This class of
heterocycle is being examined with respect to its aromaticity and stability, particularly with reference to a variety of dienophiles.
Nowadays, nitrogen containing
heterocycle is important substructure in many fields, especially in pesticides and medicines [1-5].
Synthesis and Fluorescent Property of Some Novel Benzothiazoyl Pyrazoline Derivatives Containing Aromatic
Heterocycle, Dyes pigments, 70, 246-250, (2006).
Shirodkar, Oxadiazole: A biologically important
heterocycle, Der.
Thus, the chromophores attached to two fused rings of five-membered heteroaromatic, such as substituted triazolo[3,4-b]thiadiazole
heterocycle as shown in Fig.
Pyrazoles are chemical compounds of synthetic origin that have a five-membered
heterocycle with two nitrogen atoms and three adjacent carbon atoms.
Imidazole is a planar, nontoxic aromatic
heterocycle and is a member of the azole group, where inhibition mechanism involves adsorption onto the copper surface.
Indole is a
heterocycle of great importance in biological systems [24, 25].
Types of Pigments: Blues (Phthalo); Greens (Phthalo); Reds (Quinacridone, Napthol); Speciality Pigments (Benzimidazolone, Azo Condensation); Yellows and Oranges (Azo and
Heterocycle, Diarylides, Hansas, Specialties)
Key statement: A method for preparing a functional polymer, the method comprising: terminating a living polymer chain with a functionalizing agent where the functionalizing agent is defined by the formula [pi]-[R.sub.1]-[alpha] where [pi] is a leaving group or an addition group, [R.sub.1] is a bond or a divalent organic group, and a is a sulfur-containing
heterocycle selected from the group consisting of thiirane, thietane, thiolane, thiazoline, dihydrothiophene, thiadiazine, thioxanthene, thianthrene, phenoxathiin, dihydroisothiazole, and thienofuran group or substituted form thereof.