5 research outputs found
Advances in the Chemistry of 2,4,6âTri(thiophenâ2âyl)â1,3,5âtriazine
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. 2,4,6âTri(thiophenâ2âyl)â1,3,5âtriazine is a C3hâsymmetric system with thiophene as the donor unit and sâtriazine as the acceptor unit. This review gives an insight into the advances made in the thienylâtriazine 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 thienylâtriazine 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 thienylâtriazine 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 azobisÂ(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 cyclopentaÂ[<i>c</i>]Âthiophene, 3,4-ethylenedioxythiophene,
and thiophene-containing spirocyclic compound have been synthesized