New methods of producing such and a 4-aminobut-2-Enorido starting from the on - (5H) 4- arylalkoxy or furan-2-on - (5H) 4- alkoxy furan-2

摘要

Relates to a method for preparing formula (I) 4-aminobut-2-Enorido compound, wherein, the method, in the presence of a Brønsted acid, the present invention, four of the formula (II) - ^(wherein, A and 1, ^{R 2 R} is the specification amine of formula (III) and one compound - (5H) 4- arylalkoxy furan-2 or one compound - (5H) alkoxy furan-2 It involves converting a) have the definitions shown in the middle.