Facile one-pot multicomponent synthesis of highly functionalized tetrahydropyridines using thiamine hydrochloride as an organocatalyst

Thiamine hydrochloride (VitB1) has been found to be an efficient catalyst for the multicomponent synthesis of highly functionalized tetrahydropyridines from the reaction of β-ketoester, aromatic aldehydes and anilines. VitB1 is easily available, cheap, and eco benign.