Synthesis of calixresorcarenes using magnetic poly triazine-benzene sulfonamide-SO₃H

Abstract

Magnetic poly triazine-benzene sulfonamide-SO3H was investigated for the synthesis of calixresorcarenes.

Chlorosulfonic acid coated on porous organic polymer as a bifunctional catalyst for the one-pot three-component synthesis of 1,8-naphthyridines

“…In the first step, the poly(triazine-benzene sulfonamide) (PTBSA): was prepared according to the our previous typical procedure: 5 for this purpose, in a round-bottom flask, the prepared benzene-1,3-disulfonyl chloride (1 mmol) and CH 3 CN (10 mL) was placed and stirred for 10 min. Thereafter, triazine (0.7 mmol) was put in the above-mixed system under continuous stirring at reflux condition for 12 h. Then, the reaction mixture cooled to room temperature and PTBSA was collected by centrifugation.…”

“…3,4 In recent years, the development of heterogenization of homogeneous catalysts and use of these materials which support the fundamental pillars of green chemistry is a demanding task in chemistry. [5][6][7][8] Recently, the synthesis of solid acid catalysts used as heterogeneous catalysts has attracted attention in various organic reactions. 3,4,[9][10][11] Today, there is increasing interest in the design and synthesis of heterogeneous supports containing high loads of sulfonic acid groups to increase the turnover number (TON) and turnover frequency (TOF) of the reaction.…”

“…3,4,[9][10][11] Today, there is increasing interest in the design and synthesis of heterogeneous supports containing high loads of sulfonic acid groups to increase the turnover number (TON) and turnover frequency (TOF) of the reaction. 12 Despite signicant advances in producing eco-friendly heterogeneous supports (such as cellulose, 13 silica, 14,15 carbon nanotubes, 16 iron aluminate spinel hercynite, 17 graphite carbon nitride, 18 magnetic nanoparticles, 4,5,7,[19][20][21] and polymers 22 ), it is necessary to set certain rules for their applications in terms of their synthesis, recycling, management, and cost.…”

“…Herein, regarding the pursuing our interest in porous substances as catalysts in MCRs, 17,46,47 we aimed to design and prepare a stable multifunctional crosslinked polymer (PTBSA-SO 3 H) consisting of a melamine, sulfonamide and sulfonic acid. Accordingly, it was tried to develop a very efficient heterogeneous catalyst to synthesize 1,8-naphthyridines under ambient conditions.…”

Octa‐Substituted Resorcinarene Based Supramolecules and Its Liquid Crystalline and Biological Applications

“…[5][6][7][8][9][10][11] Different Lewis acid catalysts were used to synthesize Resorcin [4]arene and its derivatives, including Con. HCl, [12] trifluoroacetic acid, [13] TSA (Tungstant sulphuric acid), [14] MSA (molybdate sulphuric acid), [15] iodine, [16] and so on. All the ciscone stereoisomers [17,18] reported by Niedel and Vogel, and their boat, saddle, and chair stereoisomers identified by Hogberg, are produced when resorcinol reacts with different aldehydes.…”