PROCESS FOR THE MANUFACTURING OF BETAMIMETICS
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Abstract
The present invention relates to a process for preparing betamimetics of formula 1,
wherein
- n denotes 1 or 2;
- R1 denotes hydrogen, halogen, C1-4-alkyl or O—C1-4-alkyl;
- R2 denotes hydrogen, halogen, C1-4-alkyl or O—C1-4-alkyl;
- R3 denotes hydrogen, C1-4-alkyl, OH, halogen, O—C1-4-alkyl, O—C1-4-alkylene-COOH, O—C1-4-alkylene-COO—C1-4-alkyl.
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Citations
23 Claims
- 1. A process for preparing a compound of formula 1,
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2-6. -6. (canceled)
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18-21. -21. (canceled)
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22. A process for preparing a compound of formula 1b,
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23. A process for preparing a compound of formula 2b,
Specification