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Formic acid from Hexamine/HCl?
Well, not really a nightmare, but tedious work. MeNH2.HCl is actually even simplier, but just a bit ... |
6-12-2008 at 05:27
by: Klute |
The Neste process: second generation biodiesel
I recently stumbled on a article about a somewhat new process of preparing synthetic biodiesel from ... |
5-12-2008 at 02:48
by: Klute |
Cu/SiO2 a cheap versatil hydrogenation catalyst?
Ok, thanks for clearing that out. A pity, though.. |
5-12-2008 at 02:37
by: Klute |
Cu/SiO2 a cheap versatil hydrogenation catalyst?
yes, I remeber some discussion on this, I think it was Isomeric Fred that tried out the reaction wit ... |
5-12-2008 at 01:46
by: Klute |
Demethylation mechanism
Thank you for the details, Nicodem!
I was unaware of the N-demethylation via CNBr, good to know. |
5-12-2008 at 01:44
by: Klute |
Cu/SiO2 a cheap versatil hydrogenation catalyst?
Well, it could be worth a try. I am a little sceptical I must admit, although copper metal will sur ... |
4-12-2008 at 12:00
by: Klute |
Demethylation mechanism
Are you talking of O-demethylation?
Well, basicly the doublet of the oxygen is protonated or comp ... |
4-12-2008 at 11:53
by: Klute |
Cu/SiO2 a cheap versatil hydrogenation catalyst?
@ Barium: that might indeed be worth a try. But I think you will obtain Cu boride, which could be a ... |
4-12-2008 at 10:31
by: Klute |
Cu/SiO2 a cheap versatil hydrogenation catalyst?
@Jor: Unfortunaly, not in any close futur, my lab is packed in boxes, 1000km from where I now live ( ... |
4-12-2008 at 00:18
by: Klute |
Cu/SiO2 a cheap versatil hydrogenation catalyst?
I used neutral chromatographical silica gel, well it has a certain acidity. The nitric acid has nev ... |
3-12-2008 at 13:57
by: Klute |
Formic acid from Hexamine/HCl?
Surely you can substitute the formic acid if you need to go through so much trouble to get it? Ther ... |
2-12-2008 at 09:20
by: Klute |
Silica Gel
trade names I dunno they will surely be different from country to country... It used a a hydrofuge ... |
2-12-2008 at 09:10
by: Klute |
alteration of Vogel p-toluenesulfonic acid syn
Why not use a Dean Stark, and keep the solution in toluene of anhydrous acid? Depedning on what you ... |
2-12-2008 at 09:00
by: Klute |
The short questions thread (1)
Just reflux your denaturated ethanol over some CaO and NaOH to dry it up to absolute and destroy mos ... |
1-12-2008 at 14:54
by: Klute |
[Ask]how to make H3PO4 (85% or above) from P2O5 (55%) fertilizers
Do you mean FILTER H3PO4 from water? You really, really need to do some even dead basic learning bef ... |
1-12-2008 at 14:49
by: Klute |
What ELSE is in the sulfur?
I remember trying to purify garden-grade sulfur it was hell, lots of brown/black residu very difficu ... |
1-12-2008 at 14:42
by: Klute |
Silica Gel
IIRC, even boiling glass in conc. NaOH gives a silicate solution after a certain period. But you jus ... |
1-12-2008 at 14:39
by: Klute |
The short questions thread (1)
Well, i think the major problem would be the ethylen oxide.. Making it and using it (safely).. |
1-12-2008 at 10:13
by: Klute |
Benzoic Acid, Carbamid>Benzamid>Anilin?
Nice work Smuv, thank you for taking time to share this with us! |
1-12-2008 at 10:03
by: Klute |
The reduction of P-benzoquinone to Phenol
Hum, I overlooked the "hydro"... NaBH4 is indeed a good idea. SO2 will surely cause sulfonation in ... |
1-12-2008 at 09:47
by: Klute |
Silica Gel
Well, considering that it is a gel, you will not obtain hard pebbles like the dessicant, more a fine ... |
30-11-2008 at 08:53
by: Klute |
The reduction of P-benzoquinone to Phenol
You might want to try dithionite, the usual zinc/acid will surely dechlorinate? Maybe in the cold an ... |
30-11-2008 at 08:46
by: Klute |
The short questions thread (1)
497, well you can get benzyl bromide via bromomethylation, which requires very accesable reagents an ... |
27-11-2008 at 16:34
by: Klute |
making a quaternary salt from secondary amine?
Yes, definitively use excess base (5eq are not unusual), and a slight exces of MeI ( ~1.25 eq). The ... |
27-11-2008 at 16:27
by: Klute |
practice helps a lot
Basicly your polar product acted as NaCl would with H2O/IPA for example...
Comming back to the no ... |
26-11-2008 at 02:30
by: Klute |
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