Application
(+)-(5aR,10bS)-5a,10b-Dihydro-2-(2,4,6-trimethylphenyl)-4H,6H-indeno[2,1-b][1,2,4]triazolo[4,3-d][1,4]oxazinium Chloride Monohydrate serves as an effective catalyst with diverse applications. It facilitates the preparation of dihydropyridinones by enabling the reaction between enals or α'-hydroxyenones and vinylogous amides through aza-Claisen annulations. Additionally, it plays a crucial role in oxidative coupling reactions, where it helps combine di(hetero)arylmethanes with enals to produce benzimidazole fused lactams. The compound also aids in synthesizing organosilanes by catalyzing the reaction between enals and β-silyl enones. This N-mesityl-substituted chiral triazolium N-heterocyclic carbene (NHC) compound was developed by the Bode group as an organocatalyst, designed to efficiently generate reactive species such as activated carboxylates, homoenolates, and enolates.