The study of coumarin dates back to 1820 when coumarin was first extracted from tonka
bean by Vogel. Compounds containing coumarin backbone are a very important group of …

Coumarin and its derivatives are widely used as scaffolds in the synthesis of new
heterocyclic systems. This review focuses on current developments in the synthesis of …

Herein, we report a green and efficient synthetic route for the construction of diverse
functionalized coumarins in good-to-excellent yields (60–98%) via the Pechmann …

Nano-WO 3-supported sulfonic acid [n-WO 3-SO 3 H (n-WSA)] is easily prepared from the
reaction of nano WO 3 with chlorosulfonic acid as sulfonating agent. This new catalyst is …

This study reports an efficient and convenient click synthesis of novel series of chromene
scaffold linked to 1, 2, 3 triazole ring and terminal lipophilic fragments. Structures of all newly …

A rapid and efficient solvent-free one-pot synthesis of coumarin derivatives by Pechmann
condensation reactions of phenols with ethyl acetoacetate using FeF3 as a catalyst under …

Due to growing concern about chemicals and their impact on the environment, cleaner
reaction conditions are needed to be incorporated into chemical synthetic procedures …

–SO3H functionalized silica and alumina have emerged as efficient and eco-compatible
heterogeneous solid acid catalysts for the construction of various important molecular …

Coumarin and its derivatives are privileged heterocyclic motifs and important building blocks
for developing the biologically active compound due to its significant role in the development …

4-Arylcoumarins (4-aryl-2 H-1-benzopyran-2-one), also known as neoflavones, comprise a
minor subclass of naturally occurring flavonoids. Because of their broad-spectrum biological …