| 摘要 |
A 3,4-distributed benzo[b]thiophene derivative represented by the general formula (I); and a process for producing a benzo[b]thiophene derivative represented by the formula (I), which comprises producing a compound represented by the general formula (V) from a compound represented by the general formula (IV), producing from the compound (V) a mixture of compounds respectively represented by the following formulae (II) and (III), and producing the target compound from the mixture. (I) (IV) (V) (II) (III) [In the formulae, R1 and R2 each represents halogeno, trihalomethyl, C1-4 alkyl, or C1-4 alkoxy; X represents hydroxyl or halogeno; R3 and R4 each represents hydrogen, halogeno, trihalomethyl, C1-4 alkyl, or C1-4 alkoxy; and R5 represents C1-3 alkyl or trifluoromethyl.] (see formula I) (see formula II) (see formula III) (see formula IV) (see formula V)
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