Preparation and characterization of SbCl5 supported on coconut shell as nanocatalyst for the synthesis of novel 2-amino-3-phenylsulfonyl-4-aryl-4H-benzo[h]chromens

Pentachlorid antimony supported on coconut shell as an efficient and novel catalyst for one-pot synthesis of 2-amino-3-phenylsulfonyl-4-aryl-4H-benzo[h]chromen through three-component condensation of α\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \alpha $$\end{document}- naphtol, arylaldehydes and phenylsulfonyl (acetonitrile). Nanocatalyst pentachloride antimony supported on coconut shell was manufactured and characterized by FT-IR, TGA/DTG, XRD, EDX, FESEM and TEM techniques. The present method has advantages such as high activity, high reaction rate, recoverability of nanocatalyst, a simple experimental procedure, without any using of hazardous organic solvents under green conditions.