1-Fenil-2-propanon (P2P) Leuckart aminasyonu ile amfetamin ve metamfetamin. Küçük ölçekli.

Selassi

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Swim'in bu yöntemin farklı bir varyasyonuyla ilgili bir sorusu var:

İlk adımdan sonra (formik ve formamid ile kaynatma), şimdi organik fazı HCl ile geri akış yerine su ve NaOH ile tekrar kaynatıyorlar.

Birisi bana bu farklı ikinci adımdaki ölçümleri açıklayabilir mi? Swim bunu hiç bu şekilde yapmadı, ancak HCl'nin geri akışıyla eski yöntemin aksine çok zaman kazandırıyor gibi görünüyor.

L ürün başına reaktöre ne kadar kostik/su ve ne kadar katılıyor?
Bu reaksiyon karışımını hangi sıcaklıkta ne kadar süre kaynatmak gerekir?
 

Curiousonion

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Bunun için neden bu kadar düşük bir verim, metamfetamin için daha yüksek bir verim yöntemi olan var mı?
 

Saul

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bu doğru deği̇l yanliş bi̇lgi̇ bu tez adami büyük hatalar yapiyor

amonyum karbonat asla doğrudan p2p ile kullanılmaz.
Önce amonyum format yapılır.
Amonyum formatı, amonyum karbonat ve formik asit yoluyla kolayca yapılır. Titrat
pH'ı 7'ye getirin ve suyu çıkarın.
Ancak o zaman p2p ile kullanılabilir
 

waltjr5858

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Yes ammonium carbonate can completely be used in this reaction directly it's actually a very popular method in many countries and makes ammonium formate in situ.... if you're not 100% sure what you're saying on here don't
 

G.Patton

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Reflü kondansatörü ve çeker ocak kullanıyor musunuz?
 

waltjr5858

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In a write up that most people are reading to do this leuckart with formamide and p2p specifically... what is the purpose of a 15 min reflux with 30% h2O2 with the reaction mixture after you have already done the first reflux with formamide and p2p. Does it clean up or oxidize something? I mean this is prior to the hydrolysis. I just can't think of what it would do. I mean most people do it without it but it was obviously added for a reason in a actual professional write-up.
 
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G.Patton

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Sorry, but I don't clearly understand about what "15 mix reflux" are you talking about? Can you be more precise. Refer to a step number.
 

waltjr5858

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It's not on these instructions. When making amphetamine after the first 24 hour reflux on a different set of instructions they would reflux for 15 minutes with 30% hydrogen peroxide and then go on with hydrolysis. What was the point of the peroxide?
 

G.Patton

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I have no Idea about what "different set of instructions" are you talking and hence can't answer your question.
 

waltjr5858

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Ok... but in general then what would happen to the resulting solution if spun up with 30% peroxide?
 

William Dampier

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Leuckart reaksiyonunda ilave bir miktar su kullanımı verimi artırabilir. Bunu kim yaptı, buraya yazabilir.
 

TheNut22

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Evet. Leuckart'ta hiç su olmadığından emin olmalısınız.
 

southcost

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But we have a 12% water at least in our formic acid, isn't it?
 

TheNut22

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Daha güçlü hidrojen peroksitlerimi %12 H2O2'den yaptım. İçindeki suyu dikkatlice buharlaştırdım.
Hesaplamaları kimya alanındaki yapay zeka-robot asistanından istedim. Hesaplamalarda iyidir, ancak doğru cevaplar almayı beklemeyin
halojenasyonlardan veya benzerlerinden ...
 
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loadingST

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Reaksiyonu hala denemedim ama KOH ile iyi bir hidroliz ve ardından HCL ile yüksek verim vermeli ve korkarım patlayıcı peroksitler oluşturmamak ve destilasyon üzerine patlamamak için h2o2 ile çalışıyorum
 

YenaneY

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This questions are mainly regarding the actual chemistry behind the synthesis...
Why does one for the formation of the amine from the intermediate need H2O2 and HCl in the synthesis of amphetamine but only HCl in the synthesis of methamphetamine?
 

waltjr5858

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I saw the same thing and nobody has an answer for it but it was done by actual professional chemist.... not clandestine hackers so id say its there for a reason but it will work without it. Probably to kill off so.e kind of side product or something.
 

YenaneY

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I think it really is because the hydrogen peroxide helps promote the reaction, but the reaction of deformylation is generally easier on tertiary amines compared with secondary ones, which is why it happens more readily if N-methylformamide is used for methamphetamine.
 

Pinkbay

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sir, In step 3, is heating required?
 

rampage

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can you replace n-methylformamide with dimethylformamide?
 
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