Alfa-PVP sintezė (1-10 kg skalė). Išsami vaizdo pamoka.

[Ukspice]

@William Dampier

Reikia pagalbos dėl matavimų

Vietoj :Valerofenonas
Pirksiu skystį : 2-bromovalerofenoną

Jei noriu naudoti 1litrą

2-bromovalerofenono

Koks reagentų kiekis man bus reikalingas I litrui:


-Hidrobromo rūgštis (HBr) 48%;?

-Vandenilio peroksido (H2O2) 35%;?

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

-Etilo acetatas ;????

-Natrio karbonato (Na2CO3) 20% aq tirpalas;???

-Dietileteris (Et2O) ????

-EtOH 50 ???

-Dibenzoil-D-vyno rūgštis ??

-Dichlormetanas (CH2Cl2) 830 ml;

-heksanas ????

Druskos rūgšties konc. 35 % (HCl);...?

LABAI PADĖTŲ, JEI GALĖTUMĖTE MAN PATEIKTI 1 LITRO 2-BROMO NAUDOJIMO MATAVIMUS. PRAŠOME?????

Kad galėčiau apskaičiuoti vienos reakcijos sąnaudas, taip pat ar išeiga yra apie 20 % nuostolių
1 litras = 800 g a-pvp?

 

[Marvin "Popcorn" Sutton]

Parašiau jums trumpąją žinutę.

 

[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