Poly(styrene-acrylic acid) nanoparticles were prepared by emulsifier-free emulsion polymerization under ultrasonic irradiation and characterized by IR and TEM. The results show that the average diameter of the nanopar...
Eight 4-arylidene-2-phenyloxazol-5-ones were synthesized by reaction of aromatic aldehydes and hippuric acid under ultrasonic irradiation in the absence of catalyst. The reaction was completed in 30~ 40 min in high y...