Process for the preparation of 4-aminobut-2-enolide compounds of the formula (I):
comprising
reaction of a 4-alkoxyfuran-2(5H)-one compound or 4-arylalkoxyfuran-2(5H)-one compound of the formula (II)
with an amine of the formula (III)
in which R
1
, R
2
and A have the definitions given in the description, in the presence of a Brønstedt acid.
制备式(I)的4-
氨基丁-2-烯
酮类化合物的过程包括以下步骤:在Brønstedt酸存在下,将式(II)的4-烷氧基
呋喃-2(5H)-酮化合物或4-芳基烷氧基
呋喃-2(5H)-酮化合物与式(III)的胺反应,其中R1、R2和A的定义如描述中所给。