申请人:——
公开号:US20020077331A1
公开(公告)日:2002-06-20
Disclosed is a process for preparing a compound having the formula:
1
wherein R, R
1
, R
2
, R
3
, and R
4
are independently selected from the group consisting of H, Br, Cl, F, alkyl, or alkoxy.
公开了一种制备具有以下式子的化合物的方法:1其中R、R1、R2、R3和R4独立地选自H、Br、Cl、F、烷基或烷氧基的组。