Syntéza alfa-PVP (stupnice 1-10 kg). Kompletní výukové video.

[Ukspice]

@William Dampier

Potřebujete pomoc s měřením

Místo toho, abyste použili :valerofenon
Koupím kapalinu : 2-Bromovalerofenon

Pokud chci použít 1litr

2-Bromovalerofenon

Jaké množství činidla budu potřebovat na I litr:


-Kyselina hydrobromová (HBr) 48%;?

-Peroxid vodíku (H2O2) 35%;?

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

-Ethylacetát ;???

-Uhličitan sodný (Na2CO3) 20% aq roztok;???

-Diethylether (Et2O) ????

-EtOH 50 ???

-Kyselina dibenzoyl-D-vinná ??

-Dichlormethan (CH2Cl2) 830 ml;

-Hexan ????

Kyselina chlorovodíková konc. 35% (HCl);...?

VELMI BY MI POMOHLO, KDYBYSTE MI MOHLI POSKYTNOUT ROZMĚRY PRO POUŽITÍ 1 LITRU 2-BROMU. PROSÍM?????

Abych mohl stanovit náklady na reakci, je také odhad výtěžku asi 20% ztráta.
1 litr = 800 g a-pvp?

 

[Marvin "Popcorn" Sutton]

Napsal jsem vám PM.

 

[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