PROCESS FOR ORGANIC ELECTROCHEMICAL SYNTHESIS OF P-AMINOBENZOYL-GLUTAMIC ACID

摘要

The invention relates to a process for organic electrochemical synthesis of p-aminobenzoyl-glutamic acid, by electrochemically reducing the p-nitrobenzoyl-glutamic acid. The claimed process is developed in an electrolytic cell provided with lead electrodes and with a polyurethane membrane which separates the cathode space of the anode space. An aqueous solution of p-nitrobenzoyl-glutamic acid having a concentration of 2...3% and pH=2, made with a 10% sulphuric acid solution is supplied to the cathode space of the cell, while in the anode space the main electrolyte is a solution of 10% sulphuric acid. Finally, the separation of the solution resulting from the electrolysis takes place by vacuum distilation, at a pressure of 60 mmHg.