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In small scale can the workup be replaced with salting out the ipa after alkalization and extracting with say toluene then dried over something appropriate? I dont see why not but maybe im missing something.I dont own a rotovap.

Looks tasty now

Bossman, you’re not synthesising benzaldehyde or nitroethane by yourself, especially not as a begginer.Explore other options, order to sweden from poland trough somebody then send it by courier or bring it over yourself.Rc fuel is up to 30% nitroethane aswell.Bitter almond oil is almost pure...

They scale linearly, so half of everything.Reflux is not obligatory to happen for reaction to take place, if you control the reaction properly in an appropriate flask with a beefy condenser it won’t reach reflux even, especially aith 5g.If you reaction is not starting at all however with the...

Here, , jb will explain better.

Your reaction takes place at a sort of equilibrium, too complicated for me to understand for now, to explain i wont even try.But the takeaway is that if you start off with 50 molecules of your aldehyde + 50 of your amine the maximum yield with simple reflux is 50 molecules of propene + 50 of...

I keep mine airtight in the freezer, in the mylar(?) bag it came from the vendor, preferably not where the other reagents are.I stored it smelling a bit like isopropanol myself, it was fine weeks later, I just dried the amount I was working with by air before dissolving.

Ideally yeah, but you can filter off some before 24h, reheat the leftover solution, evaporate a bit (fumes are irritant) and let that sit to recover the rest.

I think maybe you still have a lot of impurities because of how red your isopropanol got, I would do another, but it’s your call.It’s probably gonna yield something atleast if you wanna go at it.

Don’t dry it yet, dissolve in hot (60-70 max) isopropanol, as little as possible.After all is dissolved let it sit at room temp preferably in dark for 24. Purity of substrate is pretty important, plus u get some nice looking crystals.Good job btw, looks like the real deal, just a bit crude.Also...

Flask on the right looks good to me, filter it and do recrystalization maybe?

In what way is it more suitable? If health is of concern and cost is not an issue why not lithium aluminium hydride? I’m curious myself

Simply dry your finished product, then put it in some filter paper and pour acetone over it.Make sure the whole mass comes into contact with the acetone.Air dry after. This will cause all acetone soluble impurities to dissolve in your acetone, leaving you with somewhat pure amphetamine sulphate.

No, that 70% refers to the yield, meaning 70%(of theory) of your raw material is reduced to your final product.I would wager the unwashed final product is relatively pure, you can test this by weighing your dry, finished product then performing an acetone wash and comparing results.