Alfa-PVP-syntes (skala 1-10 kg). Komplett videohandledning.

[Ukspice]

@William Dampier

Behöver hjälp med mätningar

Istället för att använda :Valerophenone
Jag kommer att köpa vätska : 2-Bromovalerofenon

Om jag vill använda 1 liter

2-Bromovalerofenon

Vilken mängd reagenser behöver jag per liter?


-Hydrobromsyra (HBr) 48%;?

-Väteperoxid (H2O2) 35%;?

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

-Etylacetat;???

Natriumkarbonat (Na2CO3) 20% aq-lösning;???

-Dietyleter (Et2O) ????

-EtOH 50 ???

-Dibenzoyl-D-vinsyra ??

-Diklormetan (CH2Cl2) 830 mL;

-Hexan ????

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

SKULLE VERKLIGEN HJÄLPA OM DU KAN GE MIG MÄTNINGAR FÖR ANVÄNDNING AV 1 LITER 2-BROM. PLEASE?????

Så att jag kan kosta per reaktion, är också utbytesuppskattningen cirka 20% förlust
1 liter = 800g a-pvp?

 

[Marvin "Popcorn" Sutton]

Jag har skrivit ett PM till 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