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

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

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被引用次数: 20

摘要

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 ...