Acenaphtho[1,2-b]Indoles Synthesis Using  SBA-Pr-SO₃H

Various derivatives of acenaphtho[1,2-b]indoles are the significant structures in medicinal chemistry and also in pharmacology, which were synthesized by the condensation of acenaphthenequinone, 1,3-cyclohexadiones, and aniline derivatives through the domino reaction procedure at 140 °C under the solvent-free condition in high yield using Sulfonic Acid-Functionalized Mesoporous Silica (SBA-Pr-SO₃H) as the heterogeneous nanocatalyst. This catalyst has received significant consideration due to its hexagonal morphology, high specific surface area, large pore diameter, acceptable pore wall thickness, and also the high thermal stability.