Synthesis 2023; 55(05): 799-807
DOI: 10.1055/a-1958-4406
paper

Pd-G3 XantPhos Mediated Approach to Bis-arylsulfenyl-benzo-2,1,3-thiadiazoles under Microwave Irradiation in DMF: Synthesis and Fluorescent Properties

Ramesh Katla
a   Organic Chemistry Laboratory-IV, School of Chemistry and Food, Federal University of Rio Grande-FURG, Rio Grande, RS, Brazil
,
b   Organic Catalysis and Biocatalysis Laboratory – LACOB, Federal University of Grande Dourados-UFGD, Dourados/MS, Brazil
,
Eliézer Quadro Oreste
c   Laboratory of Applied and Technological Physical Chemistry, School of Chemistry and Food, Federal University of Rio Grande, Av. Itália, km 8, Rio Grande, RS, Brazil
,
Felipe Kessler
c   Laboratory of Applied and Technological Physical Chemistry, School of Chemistry and Food, Federal University of Rio Grande, Av. Itália, km 8, Rio Grande, RS, Brazil
› Author Affiliations
R.K. is thankful for a ‘CNPq-TWAS fellow’ position. R.K. (Foreign Visiting Professor-Edital N. 03/2020 PROPESP/FURG) thanks Pró-Reitoria de Pesquisa e Pós-Graduação-Federal University of Rio Grande (PROPESP-FURG), Rio Grande-RS for a Visiting Professorship.


Abstract

Synthesis of bis-arylsulfenyl-benzo-2,1,3-thiadiazoles was accomplished using a Pd-G3 XantPhos as a simple and inexpensive catalyst. Numerous benzene thiols reacted well with 4,7-dibromo-benzo-2,1,3-thiadiazole in DMF, using K2CO3 as the base, obtaining high product yields in a short reaction time. All the synthesized compounds showed remarkable fluorescence properties with emission wavelengths in the visible range. Due to their unique properties, these compounds have potential for application as image probes in fluorescence microscopy. The study found that these compounds have a wide range of potential uses in the area of sensors, as well as displaying other useful photophysical properties.

Supporting Information



Publication History

Received: 14 July 2022

Accepted after revision: 11 October 2022

Accepted Manuscript online:
11 October 2022

Article published online:
09 November 2022

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