Heterocycles are the backbone of organic compounds. Specially, N-& O-containing
heterocycles represent privileged structural subunits well distributed in naturally occurring …

This review gives an overview of utilization of ultrasound for the synthesis of various
heterocyclic compounds. Ultrasonic irradiation has been considered as an efficient …

Ultrasound irradiation differs from conventional energy sources (such as heat, light, or
ionizing radiation) in time, pressure, and energy per molecule. The use of ultrasound waves …

The present work describes the synthesis, characterization, and application of a new ion‐
tagged iron catalyst. The catalyst was employed in the Biginelli reaction with impressive …

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 …

The current manuscript describes the role and importance of catalysis and solvent effects for
the Biginelli multicomponent reaction. The overwhelming number of new catalysts and …

A new category of polyhydroquinoline derivatives 8a–t were synthesized in moderate to
good yield (64–85%) by one-pot three-component cyclocondensation reaction of 5-(1 H …

This review gives an overview of utilization of ultrasound for the synthesis of various
heterocyclic compounds. Ultrasonic irradiation has been considered as an efficient …

Combination of ultrasound and suitable ionic liquid is a powerful tool to carry out diverse
organic transformations. In many occasions, this fruitful combination helps to get the desire …

The use of ionic liquids to replace organic solvents in metal catalyzed reactions has recently
gained much attention and great progress has been accomplished in this area in the last …