Green and highly efficient synthesis of pyranopyrazoles in choline chloride/urea deep eutectic solvent

<p>A simple and efficient multicomponent protocol, using ammonium deep eutectic solvent as a dual catalyst and environmentally benign reaction medium, is developed for the synthesis of dihydropyrano[2,3-<i>c</i>]pyrazole derivatives. This operationally simple protocol does not involve tedious workup or purification, affording the target compounds in short reaction times and excellent yields and avoiding the use of environmentally hazardous solvents and catalysts.</p

Efficient Synthesis of 3-Pyrrolin-2-one Derivatives in Aqueous Media

<div><p></p><p>An efficient one-pot, three-component synthesis of 3-pyrrolin-2-ones in aqueous media at room temperature is reported. This reaction provides a green and catalyst-free method for generation of 3-pyrrolin-2-one derivatives in good yields.</p></div