Dextroamphetamine Synthesis (Nabenhauer, 1942)

G.Patton

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>O,O-Dibenzoyl-2R,3R-Tartaric Acid
I think it is much hard to find than d-tartaric acid
 

Kslzlxczkaoxl

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So can we then take this tartrate salt D-Amph L-Tartaric, treat with sodium hydroxide, extract and precipitate with with sulphuric acid?
 

G.Patton

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UWe9o12jkied91d

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I'm going to buy tartaric acid RIGHT now, thank you based sir
 

workworkwork

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In this method is not used acetic acid, but is used another chemical together with p2np in a solution, is that the difference compared to the method used in the 2 videos to make amphetamine from aluminum amalgam?
Im talking about only the first part of the method, production of amphetamine, not about the second, Extraction of d-amphetamine.
 
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G.Patton

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Hello, almost the same. There is no acetic acid only.
 

finch3523

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can somebody explain me again pls what would be the difference if I use l-tartaric instead of d-tartaric acid with freebase? with l-tartaric there would precipate what? the d-amphetamine l-tartaric salt? What would I do then?
 

G.Patton

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Yes, you are right
 

MadHatter

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GAAAH! Use the right nomenclature with capital letters! Mixing them gets so damn confusing.

D-(-)- tartaric acid will give you a tartrate salt of D-meth/amph. I honestly don't know what the physical properties of that salt is, how well it stores, melts or tastes. But it should be fully usable.
 

finch3523

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which one is the one you can buy everywhere?
 

MadHatter

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LOL.
L-(+)-tartaric acid.
Sometimes called d-tartaric acid (with a LOWERCASE "d").
 

finch3523

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yeah that is the one i am talking about. did you use this one to make dextro-amp?
 

finch3523

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with L-(+)-tartaric acid it means you will have dextro amphetamine salt crystallizing or levo? sorry its very confusing.

"You can repeat procedure of cleaning precipitate of l-amphetamine d-tartaric salt by methanol to increase yield."

I want to do that. Can you describe the steps in more detail?
 

MadHatter

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L-tartaric acid will salt out L-amphetamine. Simple as that.
Mix the tartrate with the racemic freebase and a salt will be created. Thats L-amphetamine tartrate. Filter that out, separate. Repeat a couple of times. Eventually you will have a freebase with mostly D-amphetamine in. Salt THAT out with sulphuric acid (or bubble with dry HCl gas if it's meth) to get your non-racemic product.
 

finch3523

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ok. but I want to check it with CAS numbers because I have still conflicting info what yields what salt.

- (the one that comes from fruits and is cheap and available) CAS 87-69-4, L (+) - tartaric acid -> results into ?

(unnatural one and is expensive) CAS 147-71-7, D (-) - tartaric acid -> results into ?
 

Evilcarrot2

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Question about p2np to amph.
So I used aluminium granules as I had that laying around.
After I amalgamated it which was deep grey sludge floating around I drained and wash 4 or 5 times added small amount of distilled water and dripped 14%p2np in ipa slowly at 1st but my exotherm wasn't bad 45°c'ish I speeded it up but even after all addition in about 15mins it never went over 55c without cooling, I don't think enough hydrogen was produced from the slow reaction. Could I bubble h2 through mixture from hydrogen generator to make sure I'm using enough hydrogen or have I just fucked it up with granules?
Just wanted to know before I basify
 

G.Patton

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It is better to use Al foil from grocery store for this synthesis way. In case of H2 bubbling, it is better to use Pd/C as catalyst.
 

Evilcarrot2

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I've tried to look but can't really find an answer for pd/c preparation
I have activated carbon and maybe 50g of palladium chloride made by dissolving palladium in aqua rega and bubbling chlorine through which dropped out a nice dark red salt looks a little like iron oxide. And dried to constant weight.
How do I make pd/c
Sorry a bit off topic.
Is pd/c pyrophoric?
 
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