Hydromagnesite as an Efficient Recyclable Heterogeneous Solid Base Catalyst for the Synthesis of Flavanones, Flavonols and 1,4‐Dihydropyridines in Water.

A form of hydromagnesite with flower-like thin-sheet morphology is prepared and successfully employed as the catalyst for the synthesis of flavones (II), flavonol (III) and the multicomponent synthesis of 1,4-dihydropyridines (VII).