| abstract |
The present invention relates to a process for preparing benzanthrone or a substituent thereof, comprising the steps of: a) reacting 1 equivalent of 2-benzoylbenzoic acid or a substituent thereof with X-Y equivalent of glycerol to synthesize benzanthrone or a substituent thereof; And b) cooling, filtering, washing, and drying the benzanthrone or a substituent solution thereof. According to this method, it is possible to obtain high purity benzanthrone or a substituent thereof in high yield, to reduce the amount of waste water and to produce benzanthrone or a substituent thereof at low cost. |