申请人:——
公开号:US20030176490A1
公开(公告)日:2003-09-18
The present invention is 3,4-disubstituted-benzo[b]thiophene derivatives represented by general formula (I) and processes for preparing compounds represented by general formula (V) from compounds represented by general formula (IV), preparing a mixture of compounds represented by the following formula (II) and the following formula (III) and preparing the benzo[b]thiophene derivatives represented by the above formula (I).
1
wherein, R
1
and R
2
represent each a halogen atom, a trihalomethyl group, a C
1-4
alkyl group or a C
14
alkoxy group; X represents a hydroxy group or a halogen atom; R
3
and R
4
represent each a hydrogen or a halogen atom, a trihalomethyl group, a C
1-4
alkyl group or a C
1-4
alkoxy group; and R
5
represents a C
1-3
alkyl group or a trifluoromethyl group.
本发明涉及一种由通式(I)表示的3,4-二取代苯并[b]噻吩衍生物以及从通式(IV)表示的化合物制备通式(V)表示的化合物的过程,制备以下式(II)和以下式(III)表示的化合物的混合物,并制备上述通式(I)表示的苯并[b]噻吩衍生物。其中,R1和R2分别表示卤原子、三卤甲基基团、C1-4烷基基团或C14烷氧基团;X表示羟基或卤原子;R3和R4分别表示氢原子或卤原子、三卤甲基基团、C1-4烷基基团或C1-4烷氧基团;R5表示C1-3烷基基团或三氟甲基基团。