申请人:——
公开号:US20030149285A1
公开(公告)日:2003-08-07
The invention relates to a method for producing 1,1′ binaphthalenylidene-4,4′-diones of general formula (I), wherein R
1
represents C
1-6
alkyl, C
1-6
alkoxy, phenyl, substituted phenyl, benzyl or benzyloxy; R
2
, R
3
, R
4
, and R
5
independently of one another represent hydrogen, C
1-6
alkyl, C
1-6
alkoxy, phenyl, substituted phenyl, benzyl or benzyloxy. Production takes place by oxidative coupling of the corresponding naphthols in the presence of a peroxide and a precious metal catalyst.
本发明涉及一种制备通式(I)的1,1'-二萘亚甲基-4,4'-二酮的方法,其中,R1代表C1-6烷基,C1-6烷氧基,苯基,取代苯基,苄基或苄氧基;R2、R3、R4和R5独立地代表氢,C1-6烷基,C1-6烷氧基,苯基,取代苯基,苄基或苄氧基。该方法通过在过氧化物和贵金属催化剂的存在下对应的萘酚进行氧化偶联来进行生产。