Facile Solid-Phase Organic Synthesis of 5-Vinyl-Substituted 1,2,4-Oxadiazoles from Polymer-Bound α-Selenopropionic Acid

Cyclocondensation of polystyrene‐supported α‐selenopropionic acid with amidoximes in the presence of 1‐(3‐dimethylaminopropyl)‐3‐ethylcarbodiimide hydrochloride (EDC) followed by oxidative deselenation efficiently afforded 5‐vinyl 1,2,4‐oxadiazoles in good yield and purity with a facile work‐up procedure. Cyclocondensation of polystyrene‐supported a‐selenopropionic acid with amidoximes in the presence of 1‐(3‐dimethylaminopropyl)‐3‐ethylcarbodiimide hydrochloride (EDC) followed by oxidative deselenation efficiently afforded 5‐vinyl 1,2,4‐oxadiazoles in good yield and purity with a facile work‐up procedure.