Ultrasonics sonochemistry

Introduction of poly (4-vinylpyridinium) perchlorate as a new, efficient, and versatile solid acid catalyst for one-pot synthesis of substituted coumarins under ultrasonic …

NG Khaligh, F Shirini

Index: Khaligh, Nader Ghaffari; Shirini, Farhad Ultrasonics Sonochemistry, 2013 , vol. 20, # 1 p. 19 - 25

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Citation Number: 20

Abstract

Poly (4-vinylpyridinium) perchlorate, is a supported, recyclable, eco-benign catalyst for synthesis of substituted coumarins via Pechmann reaction using ultrasound irradiation at room temperature and neat condition in high yields with short reaction times. The catalyst was studied by FT-IR, X-ray diffraction, scanning electron microscope, thermo-gravimetric and energy dispersion X-ray analyses. All the products were extensively characterized by ...

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