A novel method for the synthesis of 2, 4-disubstituted thiophenes via the reactions of N, N-
disubstituted enaminones and elemental sulfur is developed. By simply heating the …

An efficient synthesis of highly fluorescent trisubstituted thiophenes was achieved via iodine-
catalyzed, base-promoted annulation employing elemental sulfur as a sulfur source. The …

In this work, a series of novel 3-amino-4 H-thieno [3, 2-c] coumarins were designed and
synthesized by a one-pot, catalyst-free, and three-component reaction of 3-acetylcoumarins …

Herein, we report a one‐pot viable protocol to synthesize tetrasubstituted 2‐
aminothiophenes engaging readily accessible α‐enolic dithioesters and abundant …

An operationally simple and highly efficient synthesis of functionalized thiophenes has been
developed by LiBr promoted heteroannulation of β-ketodithioesters and thioamides with …

In this work, an efficient sulfur-and DABCO-promoted reaction for the synthesis of
aminoalkylidene rhodanines from available alkylidene rhodanines and isothiocyanates is …

There continues to be great interest from materials chemistry in thiophene oligomers with
two, three, or more thiophene units, for example, for use in small-molecule optoelectronic …

A facile and highly efficient metal‐free approach has been unfolded for the synthesis of
novel dihydrothiochromeno [4, 3‐c] pyrazoles using elemental sulfur as a powerful …

The review covers work published in the calendar year 2022. References to new methods
for the ring synthesis of thiophenes, selenophenes, tellurophenes, and benzo analogs are …