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Updated: Jan 14, 2026

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
Key role of oxygen and base in catalytic thioetherification: access to sulfur bridged poly-aromatic hydrocarbons
Bedabara Nag1, Akshai Kumar1,2
1Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India. akshaikumar@iitg.ac.in.
Abstract:
A green and sustainable high-yield method for the C-S coupling of a variety of bromoanthracenes with different thiols at ambient temperature in air has been formulated under metal-free conditions to yield a range of thiophenyl anthracenes. Mechanistic studies point to the fact that the base and molecular oxygen were found to operate in a synergistic fashion while accomplishing these thio-etherification reactions. High-resolution mass spectrometry studies have been instrumental in providing pivotal evidence for the involvement of sodium benzenethiolate and phenyl thiyl radicals. While the phenyl thiyl radical has been detected by trapping it with 2,2,6,6-tetramethylpiperidine-1-oxyl, the evolved hydrogen peroxide has been detected by redox titration. The considered 9,10-bis(phenylthio)anthracenes were found to possess exciting photo-physical properties.
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