Synthesis of 1,3-benzodioxolane from catechol and dichloromethane as raw materials. It can be applied in the detection of simulated objects in gemology. Pepper ring is an important ingredient in spices, insecticides, and medicine. In the spice industry, it can be used to synthesize a range of edible and cosmetic spices, such as piperonal, jasmonal, and sesamol. In the pharmaceutical industry, 1,3-benzodioxolane is an important intermediate for the synthesis of cardiovascular drug L-methyldopa and sulfonamide anti-inflammatory drug pyrazoline sulfonamide. In the pesticide industry, it can be used to synthesize low toxicity insecticides.