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Letters in Organic Chemistry

Author(s): Chithaluri Sudhakar*, Vanam Shekhar, Manchi Shyamsunder, Adurthi Suryakumari and Vala Manojkumar

DOI: 10.2174/1570178617999200922152142

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An Efficient Rapid Synthesis of Benzoxazoles and Benzothiazoles Using PMA.SiO2 at Room Temperature under Heterogeneous Conditions

Page: [583 - 587] Pages: 5

  • * (Excluding Mailing and Handling)

Abstract

Treatment of 2-aminophenol (or 2-aminothiophenol) with aromatic aldehydes in the presence of phosphomolybdic acid on silica at room temperature affords the corresponding benzoxazoles (or benzothiazoles) in excellent yields (88-96%) under heterogeneous conditions. Benzoxazoles and benzothiazoles are formed in less than 10 min.

Keywords: Aldehydes, 2-Aminophenol, 2-Aminothiophenol, PMA SiO2, Benzoxazoles, Benzothiazoles.

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