Lityum Amonyak Huş ağacı indirgemesi l'den daha mı fazla d?

[Heisenberg5994]

Dürüst soru

 

[AuTiSTiC]

Sodyum kullanmayı tercih ederim, daha ucuzdur ve D veya L hepsi kimyasal indirgenmeye ve mekanizmaya bağlıdır, biraz problem çözme gerektirir, öğretmenimiz bu soruları kullanırdı, ancak birkaçı cevap verebildi, kolay değil ve bazen deneylerle söylenemez

 

[Osmosis Vanderwaal]

It's true, the birch reduction isn't just for drugs, it is used an many synths, but you'd be remiss to use Na because the product of the birch reaction is 11% with sodium and 75% with lithium . Lithium is free from old batteries and sodium metal is expensive. The birch has 2 simultaneous reactions going on . If you use ephedrine/pseudoephedrine or any chiral precursor, you will get 95%+ the isomer with the chirality of the precursors. If your precursor is racemic, your product isnracemic