Green approach to synthesis of ۲۱ -Thiaporphyrins: Exploring amino sulfonic acid stabilized on oxidized graphitic carbon nitride as a reusable catalyst

The green O -g-C۳N۴ substrate was used as a catalyst, and the use of harmful organic solvents was not used in this method. O-g-C۳N۴, as a heterogeneous catalyst that can be recycled and reused, has high thermal stability and active surfaces, which is very effective in synthesizing of ۲۱ - thiaporphyrins. Graphitic carbon nitride (g -C۳N۴) is a carbon -based polymer with a two-dimensional, pi-conjugated, nitrogen-rich structure that, among other C۳N۴ allotropes, includes alpha-C۳N۴, beta-C۳N۴, cubic-C۳N۴, and pseudocubic-C۳N۴. C۳N۴ is remarkably stable. The excellent thermal stability of g-C۳N۴ is due to the tri-s-triazine ring structure. Also, this compound has outstanding chemical resistance in acidic and alkaline environments and solvents such as EtOH, H۲O, THF, toluene, diethyl ether, and oxidizing conditions. g-C۳N۴ is widely used in pollutant degradation, oxidation, water splitting, and catalysis. This study aims to develop and apply a novel heterogeneous acid catalyst based on oxidized graphitic carbon nitride (O -g-C۳N۴) for the efficient synthesis of ۲۱ -thiaporphyrin derivatives. The O -g-C۳N۴/Am-SO۳H catalyst demonstrated remarkable efficacy in promoting the formation of ۲۱ -thiaporphyrin derivatives under environmentally benign conditions.

کلیدواژه ها:

Oxidized graphitic carbon nitride ، ۲۱ -Thiaporphyrin ، Heterogeneous catalyst