Methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo-1 H -1,2,4-triazol-1-yl) carbonyl) sulfamoyl] -5- Process for the preparation of methylthiophene-3-carboxylate. The present invention relates to 4-methoxycarbonyl-2 in the presence of an imidazole base substituted at the 1-position or in the presence of a mixture of bases comprising an imidazole base (N-alkylimidazole) substituted at the 1-position. Methyl 4-[(4,5-dihydro-3-methoxy-4-methyl-5-oxo- 1H -1,2,4-triazole-1- from methylthiophene-3-sulfonyl chloride (I) carbonyl) sulfamoyl] -5-methylthiophene-3-carboxylate.
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机译：甲基4-[（4,5-二氢-3-甲氧基-4-甲基-5-氧代-1 H -1,2,4-三唑-1-基）羰基氨磺酰基]- 5-制备甲基噻吩-3-羧酸酯的方法。本发明涉及在1-位被取代的咪唑碱存在下或在1-位被取代的包含咪唑碱（N-烷基咪唑）的碱的混合物存在下的4-甲氧基羰基-2。甲基噻吩-3-磺酰氯中的甲基4-[（（4,5-二氢-3-甲氧基-4-甲基-5-氧- 1H -1,2,4-三唑-1- I）羰基）氨磺酰基] -5-甲基噻吩-3-羧酸酯。
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