METHOD OF PRODUCING THIOPHENE DERIVATIVE AND INTERMEDIATE PRODUCT THEREOF Russian patent published in 2013 - IPC C07D333/32 C07C319/18 C07C323/56 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a thiophene derivative or intermediate product thereof, which can be used as an intermediate product for producing medical and agricultural preparations , where R¹ is a C_6-10-aryl group (the C_6-10 aryl group is unsubstituted or substituted with one or two halogen atoms, one or two C_1-10-alkyl groups or C_1-10-alkoxy group (the C_1-10-alkyl group and C_1-10-alkoxy group are unsubstituted or substituted with one or more halogen atoms)), R⁴ is a C_1-3-alkyl group (the C_1-3-alkyl group is unsubstituted or substituted with a halogen atom), and X is a leaving group; R² and R³ are independently a hydrogen atom, C_1-6-alkyl group (the C_1-6-alky group is unsubstituted or substituted with a halogen atom).

EFFECT: high efficiency of the method.

22 cl, 5 tbl, 58 ex