REACTION OF PYRIDINIUM YLIDES WITH DIETHYL AZODICARBOXYLATE—A FACILE SYNTHESIS OF Δ<sup>2</sup>-1,3,4-OXADIAZOLINES—
作者:Teruaki Mukaiyama、Kunio Atsumi、Takeshi Takeda
DOI:10.1246/cl.1976.597
日期:1976.6.5
The pyridinium ylides, derived from 1-(2-oxoalkyl)pyridinium salts, reacted with diethyl azodicarboxylate to give Δ2-1,3,4-oxadiazolines, which isomerized to α-[N,N′-bis(ethoxycarbonyl)hydrazino]-α,β-unsaturated carbonyl compounds on treatment with acid such as trifluoromethanesulfonic acid.
衍生自 1-(2-氧代烷基)吡啶鎓盐的吡啶鎓叶立德与偶氮二羧酸二乙酯反应生成 Δ2-1,3,4-恶二唑啉,后者异构化为 α-[N,N'-双(乙氧基羰基)肼]- α,β-不饱和羰基化合物用三氟甲磺酸等酸处理。