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Separation of NaBH4 and Glycerine
I would try diluting with a healthy amount of toluene or ethyl acetate, and then filter the precipit ... |
4-2-2009 at 09:51
by: Klute |
Separation of alkane/bromoalkane
Could you furnish boiling points? And do you want to keep the bromoalkane as is, or can it be chemic ... |
4-2-2009 at 09:48
by: Klute |
pyridine use in benzoylation reax, why?
You can of course use pyridine as the base too, using 1.1 eq for example. Usually it the most practi ... |
3-2-2009 at 09:28
by: Klute |
pyridine use in benzoylation reax, why?
Yes, that a good place to start. If you don't use any extra base to mop up the HX formed, your pyrid ... |
2-2-2009 at 11:23
by: Klute |
Cleaning Inside of Flask
Use a base bath! I keep on telling everyone that this is really a good solution for cleaning glasswa ... |
1-2-2009 at 10:45
by: Klute |
pyridine use in benzoylation reax, why?
The pyridine is there to react with the formed HX, driving the reaction forward, and preventing any ... |
1-2-2009 at 09:45
by: Klute |
Bath circulator corrosion
Oxalic acid works great for removing rust staines! I alwya use it for cleaning the old rusty metal ... |
29-1-2009 at 11:26
by: Klute |
4-Aminobenzoic acid from Paracetamol
I guess he confused the phenol and the benzylic alcohol! Your one carbon short I'm afraid! |
28-1-2009 at 11:53
by: Klute |
The short questions thread (1)
Alumina plates work very well for polar compounds, I use this routinely at work as most complexes I ... |
28-1-2009 at 11:27
by: Klute |
Ozonelabs synthesis of N-Phenylmaleimide
Beautifull! Thank you very much!
So what's next on your list? Any uses of the formed product? |
25-1-2009 at 04:03
by: Klute |
Bad pd on C?
Pd/C usually doesn't go bad by itself, I'ev been using the same one for years, and no problem.
Th ... |
24-1-2009 at 05:46
by: Klute |
Alkenes from alcohols- a problem
Interesting topic!
Is your substrate alcohol racemic? Or can you start from the favorable enatiom ... |
20-1-2009 at 13:17
by: Klute |
The short questions thread (1)
appetsbud,
I have prepared paraformaldehdye from 37% formalin several times, by just vacuum disti ... |
18-1-2009 at 12:51
by: Klute |
Ozonelabs synthesis of N-Phenylmaleimide
Very nice! I like the pdf presentation! This could actually go into prepublication...
I would lov ... |
18-1-2009 at 12:15
by: Klute |
The Neste process: second generation biodiesel
Well, indeed this isn't a solution for complete replacement of petrodiesel! But it is a much more ef ... |
13-1-2009 at 08:26
by: Klute |
Dean Stark Trap
Well, you can make it to work if using enough toluene, or even better lower alkanes. The removal of ... |
9-1-2009 at 14:18
by: Klute |
Dean Stark Trap
And place the pump in a plastic tube (no breaking  ), on the top of your
improvised stand, so that ... |
8-1-2009 at 12:20
by: Klute |
Help to recognize a quaternary ammonium salt
And benzylalkylammonium salts are easily prepared, once you have either a trialkylamine and benzyl h ... |
8-1-2009 at 11:58
by: Klute |
The short questions thread (1)
Or react ammonia or (mono-, di-, tri-)methylamines with excess methyl nitrate? |
4-1-2009 at 06:52
by: Klute |
Acetone Uses
Well, in reactions involvingamine, or ketones and aldehydes in a cidic or basic media, acetone can i ... |
25-12-2008 at 04:02
by: Klute |
Help: Failed chloromethylsulfonyl chloride Prep
Beautifull! Well done! |
25-12-2008 at 04:00
by: Klute |
2-methylbutanal to 2-amino-butane synthesis
Well, even plain hypochlorite and a PTC will do that easily i think. If you have the opportunity, yo ... |
25-12-2008 at 03:58
by: Klute |
The short questions thread (1)
Formula, there has been a post on that exact subject not logn ago, try using the search engine. Basi ... |
24-12-2008 at 02:53
by: Klute |
Vacuum on Glassware
Honestly, if it chemical glassware and not cracked or starred, you have nothing to worry about, they ... |
24-12-2008 at 02:47
by: Klute |
A new demethylation reagent pair: AlCl3/Thiourea
Very nice work!
I have had good results by recrystallizing aroamtic aldehydes with ethyl acetat ... |
22-12-2008 at 15:03
by: Klute |
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