have been trying to separate the d- and l-forms of propylhexedrine using chiral acids, namely, (-)-tartaric, (-)-malic and (+)-mandelic acids. The latter two readily form precipitates and looks promising but I working with a proper procedure. Most of it has been based on US patent 2454746, which lack procedural details. There are better details in US patent 2276508/9, however I have not been able to repeat this. Does anyone have experience in this and can share some insights?

More Eman Abdullah's questions See All
Similar questions and discussions