| Search |
| [Next Page] |
Functionalization of silica gel without silanes, solid supported TEMPO catalysts?
Well, I do not know about lignine, but polystyrene is easily nitrated to give mostly para nitro subs ... |
1-6-2008 at 00:12
by: Nicodem |
proposed synthesis
No, with benzaldehyde or benzyl halides you would get 1,4-dibenzylpiperazine. Actually, there is no ... |
31-5-2008 at 23:55
by: Nicodem |
Functionalization of silica gel without silanes, solid supported TEMPO catalysts?
[quote][i]Originally posted by Klute[/i]
I'm surprised you say this as Silica Sulfuric Acid is very ... |
31-5-2008 at 07:13
by: Nicodem |
Functionalization of silica gel without silanes, solid supported TEMPO catalysts?
Sulfonated silica, being a mixed anhydride, hydrolizes quite rapidly and is of no use as a solid sup ... |
31-5-2008 at 03:34
by: Nicodem |
proposed synthesis
[quote][i]Originally posted by chemrox[/i]
(0.1 mol.) N-benzylpiperazine is dissolved in DCM under ... |
31-5-2008 at 03:24
by: Nicodem |
A question on the hydrolisis of nitriles to acids.
Nitriles are hard to hydrolyze and will not easily do so at room temperature. Just do a kinetic cons ... |
31-5-2008 at 03:03
by: Nicodem |
menthol extraction
I don't think the isolation of menthol from the mint essential oil is easy enough for the average am ... |
31-5-2008 at 02:38
by: Nicodem |
thionyl chloride and alcohols
In the Organikum, a typical practical chemistry book, the authors claim that: "With thionyl chlorid ... |
31-5-2008 at 02:26
by: Nicodem |
Asymmetric Etherification of 1,4-dihydroxybenzene
In my experience, aqueous solution of sodium phenolate is stable for weeks. It does darken a bit aft ... |
20-5-2008 at 00:31
by: Nicodem |
Problem with Friedel Crafts acylation using Oxalyl chloride
Interesting in that they managed to prevent chlorocarbonylation simply by using CS2 as solvent. This ... |
19-5-2008 at 09:39
by: Nicodem |
Aromatic halogen exchange: chloro to bromo
Sulfones, as far as I know are not compatible with BuLi. The side product from ArLi + BrCH2-CH2Br is ... |
19-5-2008 at 04:20
by: Nicodem |
Lithium Al Hydride quick question
LiAlH4 is very pyrophoric, but it certainly is not explosive, so all this about screw caps is just n ... |
19-5-2008 at 04:00
by: Nicodem |
Problem with Friedel Crafts acylation using Oxalyl chloride
What makes you believe oxalyl chloride behaves like that in Friedel-Crafts acylation? What is the re ... |
19-5-2008 at 03:56
by: Nicodem |
Asymmetric Etherification of 1,4-dihydroxybenzene
[quote][i]Originally posted by Klute[/i]
I'm surprised of this, I could have sworn I had seen a pre ... |
18-5-2008 at 03:42
by: Nicodem |
Asymmetric Etherification of 1,4-dihydroxybenzene
Methyl bromide is not much less electrophilic than methyl iodide. They are more or less similarly re ... |
18-5-2008 at 03:13
by: Nicodem |
Fractional Distillation of Nitro-Toluene
Besides the above references, the freezing method is also described in detail in Organikum (at least ... |
18-5-2008 at 02:08
by: Nicodem |
how to synthesis5--methyl-- 3-bromo-pyridine
[quote][i]Originally posted by millerxia[/i]
afer 2 hours , i analysis by GC, fond that we only get ... |
18-5-2008 at 01:55
by: Nicodem |
how to get 5-Bromo-2-pyridinecarbonitrile?
Patents can not be restricted! The law about patents says they must be public and since the advent o ... |
16-5-2008 at 01:07
by: Nicodem |
Asymmetric Etherification of 1,4-dihydroxybenzene
Excellent job! 
For years I was wondering why nobody reports using this method for methylating ph ... |
16-5-2008 at 00:38
by: Nicodem |
how to get 5-Bromo-2-pyridinecarbonitrile?
You should describe the procedure you use now or give a reference for it. You did not even bother te ... |
16-5-2008 at 00:33
by: Nicodem |
Benzyl Benzonate Toxicity in Humans
Being worried about the toxicity of something relatively as innocuous as benzyl benzoate while poiso ... |
15-5-2008 at 03:09
by: Nicodem |
Phenylbromopropan infos?
You still did not tell what about 2-bromo-1-phenylpropane you want to know about. I gave you the boi ... |
13-5-2008 at 22:15
by: Nicodem |
1-amino-2-propanol
Using NaOCl on propylene should give propylene oxide directly since the intermediate chlorohydrine c ... |
13-5-2008 at 22:02
by: Nicodem |
Asymmetric Etherification of 1,4-dihydroxybenzene
This can not be a normal etherification since then you would obtain only dimethyl ether (ArOH is nea ... |
13-5-2008 at 21:51
by: Nicodem |
Arylaziridines synthesis and comments.....
[quote][i]Originally posted by solo[/i]
....and since I'm working with a base that doesn't dissolve ... |
13-5-2008 at 00:54
by: Nicodem |
| [Next Page] |
