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oa South African Journal of Chemistry - Polyaniline/SiO catalyzed one-pot synthesis of Tetrahydrobenzo[b]pyran derivatives : research article

 

Abstract

Polyaniline/SiO is an efficient catalyst for the synthesis of tetrahydrobenzo[b]pyran derivatives from a one-pot, three component, condensation of aldehydes, malononitrile and dimedone at room temperature. This protocol has several advantages such as high yield, a simple work up procedure, low toxicity and easy recovery and reusability of the catalytic material. The catalyst has been readily prepared and characterized by means of thermal analysis (TG-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR).

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/content/chem/63/1/EJC24495
2010-01-01
2016-12-05
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