| The serial products of aminoanisole, which have been widely used as intermediate in organic synthesis, especially in the synthesis of medicine and dyestuff, are important materials for organic and chemical industry. So the products of aminoanisole present the satisfactory economical as well as social benefit. The conventional methods of aminoanisole production mainly include: the nitroanisole powdered iron/sodium sulfide reduction method; the nitroanisole catalytic hydrogenation method and the hydrazine hydrate reduction method.The conventional methods, especially the powdered iron/ sodium sulfide reduction method, bring much liquid waste and waste residue. While nowadays, green, clean and environment-friendly technologies become frontiers of chemical industry. Atom economy became a popular topic and the concept of green chemistry was brought out. Organic electro-synthesis, which studies the synthesis of organic compound with electrochemical technologies and methods, uses electron as reagent to replace the conventional redox agent to carry out the synthesis of organic compound. It tries to avoid pollution from the beginning. To synthesize the aminoanisole from nitroanisole by electrochemical reduction gives some new ideas for the synthesis of the serial products of aminoanisole.The paper is divided into two main parts. In the first part, the electrochemical behavior of p-nitroanisole was discussed and the optimized conditions for the preparation of p-aminoanisole from p-nitroanisole by electrochemical method were studied. Cyclic voltammetry and Chronocoulometry were used to study the electrochemical reduction behavior of p-nitroanisole on copper electrode. The results showed that the reduction of p-nitroanisole on copper electrode was a diffusion-controlled irreversible process. The diffusion coefficient D of p-nitroanisole in methanol-H2O solution was 1.03×10-5cm2.s-1, while the transfer coefficient was 0.26. Copper as working electrode, SCE as reference electrode and... |
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