Iodine-catalyzed three-component annulation: access to highly fluorescent trisubstituted thiophenes?

Chemical Communications Pub Date: 2023-07-20 DOI: 10.1039/D3CC02711B

Abstract

An efficient synthesis of highly fluorescent trisubstituted thiophenes was achieved via iodine-catalyzed, base-promoted annulation employing elemental sulfur as a sulfur source. The compounds exhibit excellent photophysical properties like solid-state fluorescence, high quantum yield and solvatochromism. As these thiophene derivatives have potential application in the development of optoelectronic devices, gram-scale synthesis of the desired heterocycles was demonstrated.

Graphical abstract: Iodine-catalyzed three-component annulation: access to highly fluorescent trisubstituted thiophenes
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