Alpha-PVP synthesis (1-10kg scale). Complete video tutorial.

pachemguy

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How much methylamine would one use for 1kg of bk ??
 

OrgUnikum

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262 g is absolute minimum, realistically 280 g - 300 g.
Thats 700 g - 750 g of a 40% MeNH2 solution in water, look at the 4-MMC synth which uses EtOAc for the workup/crystallisation as it won't work as here described for the water.
 
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pachemguy

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Copper carbonate is not a good catalyst for this reaction copper chromate or acetophenone dose a great job I also have found success with spearmint oil and turpentine
 

pachemguy

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Wish I could get my hands on 55gal drum you ever wanna come up off some of that lmk lol
 

Ukspice

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@William Dampier

Need help with measurements

Instead of using :Valerophenone
I will buy liquid : 2-Bromovalerophenone

If I want to use 1litre

2-Bromovalerophenone​


What is the reagents amount I will need per I litrre:


-Hydrobromic acid (HBr) 48%;?

-Hydrogen peroxide (H2O2) 35%;?

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

-Ethyl acetate ;???

-Sodium carbonate (Na2CO3) 20% aq solution;???

-Diethyl ether (Et2O) ????

-EtOH 50 ???

-Dibenzoyl-D-tartaric acid ??

-Dichloromethane (CH2Cl2) 830 mL;

-Hexane ????

Hydrochloric acid conc. 35% (HCl);.??

WOULD REALLY HELP IF YOU CAN GET ME MEASUREMENTS FOR USE OF 1 LITRE 2-BROM. PLEASE?????

So that I can cost per reaction, also is the yield estimate about 20% loss
1 litre = 800g a-pvp?
 

bruhh

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Is the video showing stage 4(Diastereomeric) being performed ?
 

Poseidongo

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Can I use something else instead of valerophenone
 

Heineken

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2bromo valephelone can use
 
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Heineken

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other chemicals no work to made a pvp
 

w2x3f5

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There is the reaction of Friedel Crafts, also the Grignard reaction. you can follow these paths
 

Poseidongo

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Is stage 4 important?
 

Heineken

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all steps is important xD
 

Poseidongo

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But in video it has shown only upto bucchner filtration that is 3rd stage
 

Heineken

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next is made crystals like glass
 

Poseidongo

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Ohh thank you so much bro. But can I stop my procedure on stage 3 as it is also producing the powder ?
 

Heineken

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yes but if u made crystal then u have 99% pure if u made synthesis good but this how they show on video is no good on 100%
 

Poseidongo

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Thank you so much for guiding me brother 💪. I think I don't have any major need to make crystal as in our country only powder substance is sold. No one buys crystals here
 

Robertos

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Hi , i have some question about STAGE 4 , any one can help ?
 

maloo

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Does the racemic version pre stage 4 still provide a quality product? Or does stage 4 make a significant difference?
 
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