Hello
From phenylisopropyl(methyl)amine freebase;
Extract the freebase amine with toluene. Prepare a solution of dextrorotary tartaric acid(1), 50g in 300ml dH2O, stir to dissolve. Extract the amine by adding in 25ml portions with vigorous shaking the acid soln. to the Toluene containing the free amine. The aqueous layer will gain a purple/red color, is separated, and placed in a separate beaker. Repeat this until no appreciable color change to the aqueous layer takes place. Pour all the aqueous extracts in an evaporating dish and let stand undisturbed for several hours until the l-amine d-tartarate crystals precipitate out of solution. Decant the mother liquor and wash the crystals with 2x25ml dH2O, adding the wash to the mother liquor. Basify the mother liquor which contains the desired d-amine d-tartarate salt. Extract w/ toluene, dry the solvent, gas w/HCl, filter the precipitate and recrystalize.
That was the easiest thing after trying a lot. As well as the most effective, for me
How much freebase you use initially for that amounts? I guess around 150gr?
Thanks.
Hello
From phenylisopropyl(methyl)amine freebase;
Extract the freebase amine with toluene. Prepare a solution of dextrorotary tartaric acid(1), 50g in 300ml dH2O, stir to dissolve. Extract the amine by adding in 25ml portions with vigorous shaking the acid soln. to the Toluene containing the free amine. The aqueous layer will gain a purple/red color, is separated, and placed in a separate beaker. Repeat this until no appreciable color change to the aqueous layer takes place. Pour all the aqueous extracts in an evaporating dish and let stand undisturbed for several hours until the l-amine d-tartarate crystals precipitate out of solution. Decant the mother liquor and wash the crystals with 2x25ml dH2O, adding the wash to the mother liquor. Basify the mother liquor which contains the desired d-amine d-tartarate salt. Extract w/ toluene, dry the solvent, gas w/HCl, filter the precipitate and recrystalize.
That was the easiest thing after trying a lot. As well as the most effective, for me
Method tested and works effectively, I used a similar method but this one works better thanks ;-) (I did it in larger amounts the amounts posted are for 150gr of freebase)
Hello
From phenylisopropyl(methyl)amine freebase;
Extract the freebase amine with toluene. Prepare a solution of dextrorotary tartaric acid(1), 50g in 300ml dH2O, stir to dissolve. Extract the amine by adding in 25ml portions with vigorous shaking the acid soln. to the Toluene containing the free amine. The aqueous layer will gain a purple/red color, is separated, and placed in a separate beaker. Repeat this until no appreciable color change to the aqueous layer takes place. Pour all the aqueous extracts in an evaporating dish and let stand undisturbed for several hours until the l-amine d-tartarate crystals precipitate out of solution. Decant the mother liquor and wash the crystals with 2x25ml dH2O, adding the wash to the mother liquor. Basify the mother liquor which contains the desired d-amine d-tartarate salt. Extract w/ toluene, dry the solvent, gas w/HCl, filter the precipitate and recrystalize.
That was the easiest thing after trying a lot. As well as the most effective, for me
friend means dextromethamphetamine is in aqueous solution. have you ever tried with levotartarid acid and what is the procedure.
friend means dextromethamphetamine is in aqueous solution. have you ever tried with levotartarid acid and what is the procedure.
Hello
From phenylisopropyl(methyl)amine freebase;
Extract the freebase amine with toluene. Prepare a solution of dextrorotary tartaric acid(1), 50g in 300ml dH2O, stir to dissolve. Extract the amine by adding in 25ml portions with vigorous shaking the acid soln. to the Toluene containing the free amine. The aqueous layer will gain a purple/red color, is separated, and placed in a separate beaker. Repeat this until no appreciable color change to the aqueous layer takes place. Pour all the aqueous extracts in an evaporating dish and let stand undisturbed for several hours until the l-amine d-tartarate crystals precipitate out of solution. Decant the mother liquor and wash the crystals with 2x25ml dH2O, adding the wash to the mother liquor. Basify the mother liquor which contains the desired d-amine d-tartarate salt. Extract w/ toluene, dry the solvent, gas w/HCl, filter the precipitate and recrystalize.
That was the easiest thing after trying a lot. As well as the most effective, for me
Dose the separation of D & L just apply to P2P
Unfortunately, I do not quite understand your question. If it is related to the fact that they make their synthesis via ephedrine, the separation of the isomers is not necessary. If they start from p2p, a separation of the isomers is always necessary to form crystals, this separation is exactly related to the synthesis of p2p. I hope I could help you.
How do I tell if its P2P or ephedrine synthesis ? And yes that was a big help on that last Question thank you
Hello
From phenylisopropyl(methyl)amine freebase;
Extract the freebase amine with toluene. Prepare a solution of dextrorotary tartaric acid(1), 50g in 300ml dH2O, stir to dissolve. Extract the amine by adding in 25ml portions with vigorous shaking the acid soln. to the Toluene containing the free amine. The aqueous layer will gain a purple/red color, is separated, and placed in a separate beaker. Repeat this until no appreciable color change to the aqueous layer takes place. Pour all the aqueous extracts in an evaporating dish and let stand undisturbed for several hours until the l-amine d-tartarate crystals precipitate out of solution. Decant the mother liquor and wash the crystals with 2x25ml dH2O, adding the wash to the mother liquor. Basify the mother liquor which contains the desired d-amine d-tartarate salt. Extract w/ toluene, dry the solvent, gas w/HCl, filter the precipitate and recrystalize.
That was the easiest thing after trying a lot. As well as the most effective, for me
Hello
From phenylisopropyl(methyl)amine freebase;
Extract the freebase amine with toluene. Prepare a solution of dextrorotary tartaric acid(1), 50g in 300ml dH2O, stir to dissolve. Extract the amine by adding in 25ml portions with vigorous shaking the acid soln. to the Toluene containing the free amine. The aqueous layer will gain a purple/red color, is separated, and placed in a separate beaker. Repeat this until no appreciable color change to the aqueous layer takes place. Pour all the aqueous extracts in an evaporating dish and let stand undisturbed for several hours until the l-amine d-tartarate crystals precipitate out of solution. Decant the mother liquor and wash the crystals with 2x25ml dH2O, adding the wash to the mother liquor. Basify the mother liquor which contains the desired d-amine d-tartarate salt. Extract w/ toluene, dry the solvent, gas w/HCl, filter the precipitate and recrystalize.
That was the easiest thing after trying a lot. As well as the most effective, for me
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