Conjugated small organic molecules: synthesis and characterization of 4-arylpyrazole-decorated dibenzothiophenes. (19th May 2020)

• Record Type: Journal Article
• Authors: Panda, Satyajit; Jat, Ram Singh; Fayaz, Amir; Saha, Jony; Thirumoorthi, Ramalingam; Roy, Tapta Kanchan; Bhanuchandra, M.
• Is Part Of: New journal of chemistry. Volume 44:Number 21(2020)
• Page Start: 8944
• Page End: 8951
• Publication Date: 2020-05-19
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d0nj01887b
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : 4-Arylpyrazole-decorated dibenzothiophenes have been synthesized. Abstract : 4-Arylpyrazole-decorated dibenzothiophenes have been synthesized. The synthesis involves the treatment of 2, 8-dibromodibenzothiophene with pyrazole under Ullmann-type amination conditions for the dual C–N bond formation. The selective bromination of the resulting dual C–N bonded 2, 8-dipyrazolyldibenzothiophene, and the subsequent Suzuki–Miyaura reaction furnished the target conjugated materials comprising small organic molecules. The electron-deficient dibenzothiophene- S, S -dioxide core was obtained in quantitative yield. UV-Vis absorption studies indicated changes in the positions of the peak maxima upon increasing the conjugation length. Electrochemical and theoretical investigations of selected synthesized materials are also included.