Alfa-PVP-syntese (skala 1-10 kg). Komplet videovejledning.

[Ukspice]

@William Dampier

Brug for hjælp til målinger

I stedet for at bruge :Valerophenone
Jeg vil købe væsken : 2-Bromovalerophenon

Hvis jeg vil bruge 1 liter

2-Bromovalerophenon

Hvad er den mængde reagenser, jeg skal bruge pr. liter?


-Hydrobromsyre (HBr) 48%;?

-Hydrogenperoxid (H2O2) 35%;?

-Pyrrolidin (CAS 123-75-1);???

-Ethylacetat ;???

-Natriumcarbonat (Na2CO3) 20% aq opløsning;???

-Diethylether (Et2O) ????

-EtOH 50 ???

-Dibenzoyl-D-vinsyre ??

-Dichlormethan (CH2Cl2) 830 mL;

-Hexan ????

Saltsyre konc. 35% (HCl);.??

VILLE VIRKELIG HJÆLPE, HVIS DU KAN GIVE MIG MÅL FOR BRUG AF 1 LITER 2-BROM. PLEASE?????

Så jeg kan koste pr. reaktion, er også udbytteestimatet omkring 20% tab
1 liter = 800 g a-pvp?

 

[Marvin "Popcorn" Sutton]

Jeg har skrevet en PM til dig.

 

[Spikkel93]

Got the same question can u send me also in pm ?
Thanks in advance

 

[SpaceRocket]

hello, I have a question, I have all the steps. followed the process and have a nice a-pvp with a result of 80%. I do it on a larger scale between 1 and 0.5 kg bromo, but now I wonder how I can get large, beautiful crystals because if I try to recrystallize in water it grows. back like little needles. You can see on the picturen powder what i have made and the cristals sombody els but he dont want to tel me how he did it if sombody can help me wild be great!!!

 

[G.Patton]

Hi, how do u recrystallize it?

 

[SpaceRocket]

I am loking for method how to cristalize , when i want to cristalize i get nedel cristal like this on the photo

 

[G.Patton]

a-PVP crystallization

 

[RegulierTier]

Can I replace the ethylacetate with toluene or TBME?
I don't have a rotovap so destill under vacuum would be a problem...

 

[SpaceRocket]

I did it with 2 infrared lamps and had to evaporate 16.9 ethiel acetate in plastic containers, which took me 30 hours and i dry my powder also with the lamps that go very fast in view hours your powder is dry