2-Phenyl-substituted 1,3-benzodioxole derivatives were synthesized by microwave irradiation by reacting catechol with benzoic acid derivatives in the presence of polyphosphoric acid as a catalyst
which acts as a solvent and also as a cyclizing agent. This synthesis has various advantages over other
Green Chemistry Letters and Reviews
Gupta et al
catalytic conventional synthesis because it saves time, increases yield, and is a simple, economical, and effective synthesis. Moreover, this is also an excellent green chemistry approach as it
does not require additional toxic solvents or harmful chemicals, and overall it reduced energy utilization than the other methods of synthesis.