Ultrasonic-assisted ruthenium-catalyzed one-pot synthesis of biscoumarins

The Ru-grafted zeolite beta was found to be an excellent heterogeneous catalyst for one-pot synthesis of biscoumarins. This reaction was carried out under reflux condition and ultrasonic irradiation. On the other hand, the catalyst could be recovered for the subsequent reactions and reused without appreciable loss of activity

Efficient Synthesis of (<i>S</i>)-(+)-Clopidogrel Bisulfate-Capped Silver Nanoparticles

<p>In this work primarily one-pot synthetic development in the preparation of clopidogrel bisulfate with a polymorphic crystalline form II in 90% yield was developed. This premade antiplatelet drug has been used to protect starch-stabilized silver nanoparticles (AgNPs).</p