HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
Dropropizine → Levodropropizine
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | Dropropizine | HCID 3169 | — |
| Edukt | L-Tartaric acid | HCID 444305 | — |
| Produkt | Levodropropizine | HCID 65859 | — |
Reaktionsschritte
According to the invention, resolution of dropropizine is carried out by treating it with L(+)tartaric acid in aqueous medium: the precipitated salt is then crystallized, alkalinized and recrystallized to give levodropropizine.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US05087698 |
| Quelldatensatz | uspto-grants-1992_02 |
| ORD ID | ord-7838876847e44a8183215a35cd061918 |
| Quellennotiz | uspto-grants-1992_02 |