10.1007/s40097-014-0129-7

Facile microwave-assisted synthesis of 2-aryloxazolo[4,5-b]pyridines using SBA-Pr-NH2

  1. Department of Chemistry, Alzahra University, Tehran, IR
  2. School of Chemistry, College of Science, University of Tehran, Tehran, IR
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Published in Issue 07-10-2014

How to Cite

Mohammadi Ziarani, G., Shakiba Nahad, M., Lashgari, N., & Badiei, A. (2014). Facile microwave-assisted synthesis of 2-aryloxazolo[4,5-b]pyridines using SBA-Pr-NH2. Journal of Nanostructure in Chemistry, 5(1 (March 2015). https://doi.org/10.1007/s40097-014-0129-7

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Abstract

Abstract Abstract In this work, amino-functionalized SBA-15 (SBA-Pr-NH 2 ) has been used as a basic nano-catalyst in the one-pot synthesis of 2-aryloxazolo[4,5- b ]pyridines by the condensation reaction of 2-amino-3-hydroxypyridine and benzoyl chlorides under microwave irradiation in solvent free conditions. Among the advantages of this work are short reaction times, high yields and simple work-up. SBA-Pr-NH 2 as an efficient heterogeneous nanoporous solid basic catalyst which was prepared by silica functionalization with 3-aminopropyltriethoxysilane, can be easily removed from the reaction mixture by simple filtration, and also recovered and reused without noticeable loss of reactivity. 2-Aryloxazolo[4,5- b ]pyridines have different pharmacological activities (anti-inflammatory, anti-pyretic, analgesic, antifungal). In the current method for the synthesis of 2-aryloxazolo[4,5- b ]pyridines, no hazardous organic solvent was used and simplicity of the procedure provides significant improvements over many of other existing methods. Furthermore, the SBA-15-Pr-NH 2 with pore size of 6 nm can act as nano-reactor. Graphical Abstract

Keywords

  • 2-Aryloxazolo[4,5-b]pyridines,
  • SBA-Pr-NH2,
  • Microwave irradiation,
  • 2-Amino-3-hydroxypyridine,
  • Nano-reactor

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