The present invention provides a new process of synthesis of a polymorph of 7-chloro-4-(piperazin-1-yl)-quinoline of Formula I. Said quinoline compound is substantially pure of any impurities. The present invention further provides the use of the above-mentioned polymorph of 7-chloro-4-(piperazin-1-yl)-quinoline in the synthesis of piperaquine or one of its pharmaceutically acceptable salts.
本发明提供一种合成公式I中7-
氯-4-(
哌嗪-1-基)-
喹啉的新工艺。所述
喹啉化合物基本上纯净,没有任何杂质。本发明还提供上述7-
氯-4-(
哌嗪-1-基)-
喹啉的多晶形在合成
哌嗪或其药学上可接受的盐中的应用。