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Synthesis of oxiracetam
Distill it over some dessicant, like Na or Na/benzophenone ketyl. Simple distillation will not dry ... |
13-9-2008 at 06:24
by: Klute |
Suitable Surfactant Recommendation
A few % high alcohol, like n-octanol might do the trick? I know it commonly used to reduce foaming, ... |
12-9-2008 at 06:44
by: Klute |
Dehydrogenation of Cyclohexane
And that would be a very expensive way to benzene 
Start from benzoic acid! |
12-9-2008 at 05:29
by: Klute |
Synthesis of oxiracetam
DMF is good because it turns your anion more nucleophilic.
You mighy want to distill your dioxane ... |
12-9-2008 at 05:28
by: Klute |
DCM or Et2O?
Nah, such hydrocarbons are too non-poalr for an efefctive extraction, except for really non-polar co ... |
12-9-2008 at 04:54
by: Klute |
Synthesis of oxiracetam
DMF is a very good solvent for alkylations as it solvates the counter ion of the anion to somepoint, ... |
12-9-2008 at 04:50
by: Klute |
DCM or Et2O?
Well, seeing the conditions required to methylenated very nucleophilic phenolates, I doubt any pepti ... |
12-9-2008 at 04:41
by: Klute |
Synthesis of oxiracetam
Did you preform the enolate, or directly add all 3 reagents?
Maybe you could try using DMF as a sol ... |
11-9-2008 at 17:16
by: Klute |
ester project
I have a few papers on the bayer villiger oxidation of chalcones and aliphatic ketones, but most of ... |
11-9-2008 at 10:59
by: Klute |
Synthesis of oxiracetam
What solvent, temperature and reaction times did you use? We can't help without any details....
W ... |
11-9-2008 at 07:42
by: Klute |
DCM or Et2O?
I have already seen AcOEt been used in biphasic systems with NaOCl. But depending on the reaction ti ... |
10-9-2008 at 22:22
by: Klute |
Drying Oxalic Acid Dihydrate to Anhydrous
For how long? At which temps? Indeed it would be much more simple, but at low temps it might be tool ... |
10-9-2008 at 05:05
by: Klute |
Best Ether for Grignard?
Steric hindrance I suppose, the carbocation will prefer reacting intra-molecularily than with anothe ... |
9-9-2008 at 14:37
by: Klute |
Drying Oxalic Acid Dihydrate to Anhydrous
Of course not I just thought you hadn't seen it (which was the case apparently).
I choose pet eth ... |
9-9-2008 at 14:32
by: Klute |
Drying Oxalic Acid Dihydrate to Anhydrous
I have started a thread on the subject, where I relate the use of light pet ether in a Dean Stark to ... |
9-9-2008 at 08:27
by: Klute |
ester project
Here is the prep of benzyl benzoate from Org. Synthese (the book):
[b]BENZYL BENZOATE[/b]
2 C6 ... |
9-9-2008 at 06:45
by: Klute |
Best Ether for Grignard?
As long as you haev a little bisulfite or FeSO4 at hand, it's not aproblem.. regularily test with st ... |
8-9-2008 at 21:46
by: Klute |
"dry" acetone
I routinely use K2CO3 for drying and distilling acetone with good results. Anhydrous Na2CO3 should d ... |
8-9-2008 at 21:38
by: Klute |
Diethylamine Synthesis
There could be lots of polymerisation, condensation and other reactions going on at RT. Your DEET mi ... |
8-9-2008 at 21:26
by: Klute |
Alpha-hydroxy acid from alpha-aminoacid
Yes, i think amino acids diazotize well enough. There was a preparation of 2-bromo/chloro ethyl prop ... |
8-9-2008 at 12:48
by: Klute |
Diethylamine Synthesis
It's the base that needs to be in stoechiometric amount, not the water. This isn't a catalyzed react ... |
8-9-2008 at 12:46
by: Klute |
Making Copper Acetate?
Very clever! Looks much more practical that form the oxide and cleaning it.. I will try it out next ... |
8-9-2008 at 11:49
by: Klute |
Making Copper Acetate?
If you have acces to nitric acid, it dissolves very easily (recycle the NOx fumes). You can then neu ... |
8-9-2008 at 07:54
by: Klute |
Acetonitrile form Ammonium acetate
Acetamide is made by stirring Ethyl acetate and conc. NH3 at RT for a few dasy, until a homogeneous ... |
7-9-2008 at 14:10
by: Klute |
Very old Ethyl Ether
I remember certain notes going around about drying THF with KOH being an explosion hazard if peroxid ... |
7-9-2008 at 10:01
by: Klute |
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