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If you still have that material. Try to evaporate all excess solvent add acetone 1:1 cool down all and add more HCL until starts forming crystals.
where i can find a vendor for pyrrolidin?
Will do and I'll report back the results.
Hopefully I get something out of it because last night I actually attempted a small A/B extraction to see if that'd help clean it up, but ran out of sodium hydroxide midway. Local stores were closed, and me being impatient, I then used copious amounts of sodium carbonate to neutralize the remaining HCL from my material.
Since then I've cleaned up most of the salty aqueous layer and still have the organic layer.
Long story short - I gave myself a lot of work for probably all the wrong reasons. Wish me luck!
it should have worked
what is the result?
1. In video, present: ~1 kilo (~700ml) of bromovalerophenone?
2. This proportions are correct? 100g(bk),110ml(pyrrolidine),400ml(EtAc),60ml(distilled water)?
3. In video u adding water at amination stage, but in forum text-message acetone added, what difference?
100g bk,100ml pyrrolidine (~90g) ,400ml EtAc
these are the correct proportions for the AMINATION step
after completion of the reaction add 600ml of water to wash and separate the organic phase
acetone is added before acidification, after the organic layer has been separated from the aqueous layer.
100g bk,100ml pyrrolidine (~90g) ,400ml EtAc
these are the correct proportions for the AMINATION step
after completion of the reaction add 600ml of water to wash and separate the organic phase
acetone is added before acidification, after the organic layer has been separated from the aqueous layer.
Hi can somebody tell me how i can get rid off an harsh pyrrolidine tast that i have with.my selfmade pvp?
If I get 50-60g a-pvp per 100g of 2-bromovalerophenone how I can increase yields?
of hydrohloric acid (not to over-acidify the solution)?
12. Hydrochloric acid is added to pH 5.
You can use equimolar proportion and check pH of the solution.
guys this reagents is for how many gr a-pvp ?
Reagents:
- Valerophenone (CAS 1009-14-9) 1 kg;
- Hydrobromic acid (HBr) 290 ml 48%;
- Hydrogen peroxide (H2O2) 190 ml 35%;
- Pyrrolidine 1100 ml (CAS 123-75-1);
- Ethyl acetate 4 L;
- Sodium carbonate (Na2CO3) 20% aq solution;
- Diethyl ether (Et2O) 50 ml;
- EtOH 50 mL;
- Dibenzoyl-D-tartaric acid 12.7 g, 35.5 mmol;
- Dichloromethane (CH2Cl2) 830 mL;
- Hexane 1100 mL;
- Hydrochloric acid conc. 35% (HCl);
But what was needed is to evaporate most of EA, add cold acetone 1:1 and after added enough HCL it started crystalizing almost imediatly.
so in the first part, synthesizing 2-bromovalerophenone from valerophenone, approx how much 2-bromo will that yeild? im wondering because if one were to just start by buying 2-bromovalerophenone and skip that step how much would one need to fit into the rest of the proportions etc? and about how much a-pvp in the end will the specified amounts yield?
The yield is quantitative, around 100%.
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What could i replace pyrrolidine with?
Of course there is no arguing in: "Chemical1 is not listed as illegal." The fact only that it can be used to produce an illegal drug is easily enough to get a full sentence. The good site about it is: When the people catch you, you will have a much worse fate.
I hear in other parts of the world, like Texas, there is about the same. Therefore this neglect here is not understandable.
You wrote quite obvious things. What is a main idea of your message?
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