Reactant involved in:• ;Multicomponent reactions with nitriles and carboxylic acids followed by cyclocondensation for synthesis of enantiopure pyridines1• ;Intermolecular hydroamination2• ;One-pot synthesis of alkoxy and (alkylsulfanyl)-substituted pyrroles and dihydropyridines3• ;Intermolecular [4+2] cycloaddition with dienes4• ;Allenyl cyclization and subsequent transformation into dicarbonyl, cyclopentenones, and butenolide compounds5• ;Insertion reactions of C-C pi-bonds into alkylidenesilacyclopropanes6