The present invention relates to a process for preparing 4-alkoxycarbonyl-3-aminothiophenes of the general formula (I)
and/or their hydrochlorides of the formula (I)′
in which R
1
and R
2
are each as defined in the description, and/or their mono- or bisacetylated or mono- or bisformylated form,
by reacting enamines of the formula (II)
in which R
1
and R
2
are each as defined in the description, and/or their mono- or bisacetylated or mono- or bisformylated form,
with a chlorinating agent in the presence of one or more diluents, and also to a process for preparing the compounds of the formula (II).
本发明涉及一种制备通式(I)的4-烷氧羰基-
3-氨基噻吩和/或其盐酸盐通式(I)'的方法,其中R1和R2如描述中所定义,以及它们的单酰化或双酰化或单甲酰化或双甲酰化形式,通过将通式(II)的烯胺与一种或多种稀释剂存在下的
氯化试剂反应制备而成,其中R1和R2如描述中所定义,并且还涉及制备通式(II)的化合物的方法。