CH Br Ar 1) PPh / Toluene 2) K CO /DMF 2 3 Ar-CHO , r.t. 3a-p R=H, Cl Keywords Wittig reaction Fluorescent materials (E)-stilbenes Highly substituted imidazoles Electronic supplementary material The online version of this article (doi:10.1007/s11164-016-2815-1) contains supplementary material, which is available to authorized users. & Zarrin Ghasemi email@example.com Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz 5166614766, Iran 123 3132 Z. Ghasemi, Z. Fathi Introduction The design and synthesis of ﬂuorescent organic compounds have always been of extreme interest because of their high technology applications [1–5]. p-Conjugated molecules containing aromatic heterocycles have also attracted particular attention due to their widespread use in optical systems such as organic light-emitting diodes (OLEDs) [6–8], optical sensors [9, 10], dye-sensitized solar cells , ﬂuorescent colorants [12–14] and ﬂuorescent biological labels [15, 16]. The imidazole ring with desirable electron-rich characteristic and unique structural feature is widely present in natural and synthetic molecules . 1,2,4,5-Tetraarylimidazoles, which can be prepared by four-component condensation of aromatic aldehydes, benzil, primary amines and ammonium acetate [18–20], have been considered as light-emitter scaffolds [21, 22]. Furthermore, pharmaceutical and biological activities of these polyaromatic compounds should not be ignored [23–28]. On the
Research on Chemical Intermediates – Springer Journals
Published: Nov 24, 2016
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