The invention relates to a method for producing betamimetics of formula (1), wherein in which n represents 1 or 2; R
1
represents hydrogen, halogen, C
1-4
-alkyl or O—C
1-4
-alkyl; R
2
represents hydrogen, halogen, C
1-4
-alkyl or O—C
1-4
-alkyl and; R
3
represents hydrogen, C
1-4
-alkyl, OH, halogen, O—C
1-4
-alkyl, O—C
1-4
-alkylene-COOH or O—C
1-4
-alkyl-lene-COO—C
1-4
-alkyl.
该发明涉及一种制备公式(1)的β-
肾上腺素类似物的方法,其中n代表1或2;R1代表氢、卤素、C1-4-烷基或O—C1-4-烷基;R2代表氢、卤素、C1-4-烷基或O—C1-4-烷基;R3代表氢、C1-4-烷基、羟基、卤素、O—C1-4-烷基、O—C1-4-烷基-亚烷基-COOH或O—C1-4-烷基-亚烷基-COO—C1-4-烷基。