KRETZSCHMAR, GERHARD,KRAFT, VOLKER,OLPP, THOMAS,ROSSEN, KAI
申请号：
HK12108483.3
公开号：
HK1167851B
申请日:
2012.08.30
申请国别(地区):
HK
年份:
2014
代理人:
摘要：
A process for the production of 2-alkyl-3-aroyl-5-nitrobenzofurans by acylation of 2-(2-hydroxy-5-nitrophenyl)-1-aryl-ethanones and subsequent treatment of the esters with combinations of bases and proton acids or Lewis acids. This process can be used for the production of Dronedarone. Furthermore, novel intermediates for the manufacture of Dronedarone are provided.
