Sinteza alfa-PVP (lestvica od 1 do 10 kg). Celotno video navodilo.

[Ukspice]

@William Dampier

Potrebujete pomoč pri meritvah

Namesto uporabe :valerofenon
Kupil bom tekočino : 2-bromovalerofenon

Če želim uporabiti 1 liter

2-bromovalerofenona

Kolikšna je količina reagentov, ki jo bom potreboval za 1 liter:


-Hidrobromna kislina (HBr) 48%;?

-vodikov peroksid (H2O2) 35 %;?

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

-Etil acetat ;???

-Natrijev karbonat (Na2CO3), 20% aq raztopina;???

-Dietil eter (Et2O) ????

-EtOH 50 ???

-Dibenzoil-D-vinska kislina ??

-Diklorometan (CH2Cl2) 830 ml;

-heksan ????

Klorovodikova kislina konc. 35 % (HCl);...

ZELO BI MI POMAGALO, ČE BI MI LAHKO POSREDOVALI MERITVE ZA UPORABO 1 LITRA 2-BROM. PROSIM ?????

Da bi lahko izračunal stroške na reakcijo, ali je tudi ocena izkoristka približno 20-odstotna izguba.
1 liter = 800 g a-pvp?

 

[Marvin "Popcorn" Sutton]

Napisal sem vam sporočilo 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