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Microwave-Assisted Synthesis of Polysubstituted Benzimidazoles by Heterogeneous Pd-Catalyzed Oxidative C–H Activation of Tertiary Amines

✍ Scribed by Lidia De Luca; Andrea Porcheddu

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 131 KB
Volume: 2011
Category: Article
ISSN: 1434-193X
DOI: 10.1002/ejoc.201101001

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✦ Synopsis

Abstract

Tertiary amines can be used in place of aldehydes and carboxylic derivatives as partners in the synthesis of benzimidazoles. Dehydrogenative amine activation under heterogeneous catalysis was developed for the direct transformation of tertiary amines into benzimidazoles. Good yields and efficient recovery and recycling of the catalyst are some of the advantages of this new methodology, which shows that a simple alkene is used as the overall oxidative agent. Enhanced reaction rates were observed by using focused microwave heating.

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