Introduction of antimony triiodide (SbI3) as a new and efficient catalyst for synthesis of polyfunctionalized piperidines

Saccharin‐catalyzed multicomponent cascade reactions for the synthesis of 1,2,3,4,6‐pentasubstituted piperidines

“…Recently, domino reactions of β-keto ester, amines, and aldehydes have been developed for the synthesis of multisubstituted piperidine derivatives in presence of Lewis acids [6][7][8][9][10][11], Brønsted acids [12][13][14][15], ionic liquids [16] and organocatalyst [17]. However, most of these protocols are limited to poor yields, toxic catalysts, and harsh conditions.…”