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EFFECTS OF ULTRASOUND AND MICROWAVE IRRADIATION ON THE GREEN OXIDATION OF ALKYLARENES BY KMnO4/CuSO4.5H2O

Luu Thi Xuan Thi 1
Fritz Duus 2
Le Ngoc Thach 1
Volume & Issue: Vol. 11 No. 10 (2008) | Page No.: 78-83 | DOI: 10.32508/stdj.v11i10.2704
Published: 2008-10-31

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Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

Potassium permanganate oxidized some alkylarenes such as ethylbenzene (1), propylbenzene (2), diphenylmethane (3), cumene (4), 1-bromo-2-phenylethane (5), indane (6), tetraline (7), and fluorene (8) at the benzylic position to form the corresponding aromatic ketones under solventless reaction conditions. Under the assisstance of ultrasound and microwave irradiation, the reaction times were reduced remarkably without a decrease of the yield. Reaction factors including the molar ratio of substrates, KMnO4, CuSO4.5H2O, reaction time, microwave power were optimized to achieve the highest conversion yields and product selectivities.

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