Patent ID: 8901292
Filing Date: 2014-12-02
Classification: C07D

Abstract:
1. A method of mass production of a tetrakis(p-nitrophenyl)porphyrin, the method comprising the steps of: (a) starting a reaction between fuming HNO (b) stopping the reaction by adding an ammonia solution to the reaction solution; (c) extracting an organic layer from the reaction solution and drying it to afford a residual powder; (d) applying the residual powder onto a silica gel; (e) eluting the silica gel with a solvent to remove impurities and to leave the tetrakis(p-nitrophenyl)porphyrin adsorbed to the silica gel; and (f) obtaining the tetrakis(p-nitrophenyl)porphyrin by releasing it from the silica gel with a base solution.