Microwave-Assisted Solution Phase Synthesis of Novel 2-{4-[2-( N -Methyl-2-pyridylamino)ethoxy]phenyl}-5-Substituted 1,3,4-Oxadiazole Library

  • Gaonkar S
  • Nagashima I
  • Shimizu H
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Abstract

A new series of 2-{4-[2-( N -methyl-2-pyridylamino)ethoxy]phenyl}-5-substituted 1,3,4-oxadiazoles were synthesized by the oxidative cyclization of hydrazones derived from 4-[2-(methylpyridin-2-ylamino)ethoxy]benzaldehyde and aryl hydrazines using chloramine-T as an efficient catalyst. All steps were assisted by microwave irradiation. Microwave enables all these reactions to be simple, rapid, high yielding, and avoid chromatograph purification and led environmentally benign total synthesis of focused oxadiazole library. All the synthesized compounds were isolated in good yield and characterized by 1 H NMR, 13 C NMR, and elemental analyses. The title compounds represent a novel class of biologically active heterocycles.

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Gaonkar, S. L., Nagashima, I., & Shimizu, H. (2012). Microwave-Assisted Solution Phase Synthesis of Novel 2-{4-[2-( N -Methyl-2-pyridylamino)ethoxy]phenyl}-5-Substituted 1,3,4-Oxadiazole Library . Organic Chemistry International, 2011, 1–5. https://doi.org/10.1155/2011/751894

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