Tetrahedron Letters p. 2898 - 2900 (2016)
Update date:2022-09-26
Topics: Mild conditions Dimethyl sulfoxide (DMSO) Convenient method Superbase Cyclodehydration 1,2,4-Oxadiazole Polar aprotic solvent
Baykov, Sergey
Sharonova, Tatyana
Osipyan, Angelina
Rozhkov, Sergey
Shetnev, Anton
Smirnov, Alexey
Herein, we reported a general, convenient, and efficient synthesis of 3,5-disubstituted-1,2,4-oxadiazoles via cyclodehydration of O-acylamidoximes in the superbase system MOH/DMSO (M = Li, Na, K). Excellent isolated yields (up to 98%) were attained within
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