The Electrochemical Behavior Of Isosafrole (Safrole) On Pt Electrode In Non-aqueous System

In industrial production, piperonal is oxidized from isosafrole by heavy metal salts or ozone. But for protecting environment, lower cost ,many researchers endeavor to search for new synthesis methods ,such as through total synthesis electrochemistry synthesis and biotrasfromation based on modern biological technique.In non-aqueous system , potential scale is not limited by generation of oxygen and hydrogen, so the system has relatively wider potential window than aqueous system, also it can solve many organic or inorganic substance, and it is inactive on electrode during the whole electrochemical progress. For acetonitrile has above properties, it is probable one of the widely used organic solvents.In this thesis , adopting normal electrochemical method and in-situ SERS technique to study the electrochemical behavior of isosafrole and piperonal on electrodes. The main work and results are summarized as follows:1. Using cyclic voltammogram , studying the electrochemical behavior of isosafrole on smooth Pt electrode in aqueous and non-aqueous system. And comparing the difference of the electrochemical behavior in the two kinds of systems.2. By CV and Chronocoulometry methods, probing into kinetic parameters of isosafrole on smooth Pt electrode in LiClO₄/AN solution ,such as diffusing coefficient, transferring coefficient, standard reaction velocity constant, under different temperature. And providing experimental data for synthesizing piperonal by electro-oxidizing isosafrole.3. Combination of normal electrochemical methods and in-situ Ramanspectrum technique, studying the electrochemical behavior of isosafrole and piperonal on Pt and Ag electrodes. It proved that function groups, -C=C- and -C = O, on benzene ring of isosafrole and piperonal were electro-oxidized on molecule level.