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Efficient and Convenient Protocol for the Synthesis of 3,5-Disubstituted 1,2,4-Oxadiazoles Using HClO4-SiO2 as a Heterogeneous Recyclable Catalyst

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posted on 29.05.2014 by Ramu Tadikonda, Mangarao Nakka, Mahaboob Basha Gajula, Srinuvasarao Rayavarapu, Padma Rao Gollamudi, Siddaiah Vidavalur

Silica-supported perchloric acid (HClO4-SiO2) was found to be a new, highly efficient, inexpensive, and reusable catalyst for a rapid and efficient synthesis of various 1,2,4-oxadiazoles with good to excellent yields under solvent-free conditions. The present methodology has been effectively utilized for the synthesis of oxolamine, an anti-inflammatory drug.

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