A method for the synthesis of substituted 4-(het)aryl-4-oxo-2-thienylaminobut-2-enoic acids containing a nitrile substituent in the thiophene ring was proposed. Intramolecular cyclization of the obtained compounds in the presence of propionic anhydride leads to the formation of new substituted 3-thienylimino-3H-furan-2-ones.
提出了一种合成
噻吩环上含有腈取代基的取代4-(het)aryl-4-oxo-2-thienylaminobut-2-enoic酸的方法。在
丙酸酐存在下,所得化合物的分子内环化导致形成新的取代的 3-
噻吩基亚
氨基-3H-
呋喃-2-酮。