Síntese do piperonal a partir do óleo essencial de pimenta longa (Piper hispidinervium C. DC.)

the essential oil of long-pepper (piper hispidinervum c. dc) is rich in safrole, then susceptible to isomerization reaction to obtain cis, trans-isosafrole. in this paper it is presented the eletroxidation of cis, trans-isosafrole from direct isomerization of essential oil of long-pepper, with 99,7% of convertion to isosafrole glicol, that it is react by oxidation to convert 99% into piperonal with 84,9% purity.