Advances in the Chemistry of 2,4,6‐Tri(thiophen‐2‐yl)‐1,3,5‐triazine

Abstract Heterocyclic systems are now considered to be an integral part of material chemistry. Thiophene, selenophene, furan, pyrrole, carbazole, triazine and others are some such examples worth mentioning. 2,4,6‐Tri(thiophen‐2‐yl)‐1,3,5‐triazine is a C3h‐symmetric system with thiophene as the donor unit and s‐triazine as the acceptor unit. This review gives an insight into the advances made in the thienyl‐triazine chemistry over the past two to three decades. The synthetic pathways for arriving at this system and all its important derivatives are provided. The major focus is on the materials synthesized using the thienyl‐triazine system, including star molecules, linear and hyperbranched polymers, porous materials and their diverse applications. This review will play a catalytic role for new dimensions to be explored in thienyl‐triazine chemistry

Radical-Cascade Avenue for 3,4-Fused-Ring-Substituted Thiophenes

A single-step intramolecular radical cascade reaction of diynes and thioacetic acid in the presence of a catalytic amount of azobis­(isobutyronitrile) as a radical initiator has been developed to synthesize thiophenes. This method allows easy and effective construction of a thiophene scaffold having 3,4-fused-ring substitution and unsubstituted 2,5-positions for further functionalization and polymerization. Using this method, derivatives of cyclopenta­[<i>c</i>]­thiophene, 3,4-ethylenedioxythiophene, and thiophene-containing spirocyclic compound have been synthesized