Synthesis Of (3-Mercaptoalkylamino)isoxazolyl-1,2,4-triazoles by Ring Chain Transformation

Abstract

Cyclic α—oxo—α—(1, 2, 4 ─ triazol—1 — yl) ketene N, S — acetals 1a ─ h react with hydroxylamine hydrochloride under basic conditions affording 1 — (3 — ω — functionalized alkylheteroatomic isoxazol — 4 — yl) — 1, 2, 4 — triazole 3a — h by way of ring chain transformation.