Studies on pyrrolidinones. Catalyst induced selectivity during heterocyclizations of organosilicon compounds into 1,3,4-oxadiazoles or 1,2,4-triazines

Article abstract of DOI:10.1002/jhet.5570330413

Heterocyclizations of trisilylated diacylhydrazines derived from pyroglutamic acid occurs selectively and yields, depending on the conditions, either to 1,3,4-oxadiazoles (basic catalyst: fluoride anion) or to fused 1,2,4-triazines (acidic catalyst: triflic acid).