申请人:MITSUI CHEMICALS AGRO, INC.
                            
                            
                                公开号:US20140235862A1
                            
                            
                                公开(公告)日:2014-08-21
                            
                            Provided is a simple and efficient method for the large-scale production of a 4,4-difluoro-3,4-dihydroisoquinoline derivative. In the method for producing a 4,4-difluoro-3,4-dihydroisoquinoline derivative represented by general formula (1):
a compound represented by general formula (2):
is reacted with hydrogen fluoride.