Current Organic Chemistry

Atta-ur-Rahman , FRS
Honorary Life Fellow
Kings College
University of Cambridge
Cambridge
UK

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Recent Developments in the Catalytic Synthesis of 2-Substituted Benzoxazoles

(E-pub Ahead of Print)

Author(s): Jian He, Shujun Zhang.

Abstract:

2-Substituted benzoxazoles and their various derivatives are very important structures of functional materials,such as natural products, drug candidates, and biologically relevant compounds. Furthermore, they are multifunctional intermediates and synthons in a large number of functional group transformations and total syntheses. In last several decades, chemists have put forth tremendous effort and progress in the development of synthetic procedures for 2-substituted benzoxazoles preparation and applications in synthetic and medicinal field. Catalytic synthesis of 2-substituted benzoxazoles can be classified into metal- and nonmetal-catalyzed processes simply. In the study of metal catalysis, the reactions are mainly performed using copper, palladium, iron, ruthenium, iridium; whereas, other metals such as zinc, cobalt, silver, gold based catalysts have also been explored to some extent. On the other hand, nonmetal-catalyzed 2-substituted benzoxazoles syntheses are generally restricted to Brønsted acid catalysts in the presence of or without other promoters. In this review, we are going to highlight the recent important research endeavors which are related to catalytic 2-substituted benzoxazoles synthesis.

Keywords: Benzoxazoles, 2-aminophenols, transition metal catalysis, green chemistry, nanocatalysis.Benzoxazoles, 2-aminophenols, transition metal catalysis, green chemistry, nanocatalysis.

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Article Details

VOLUME: 21
Year: 2017
(E-pub Ahead of Print)
DOI: 10.2174/1385272821666170623080714
Price: $95