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Hydride question
I've never seen a reduction of any organic substrate with NaH. I can't imagine how that could be sin ... |
3-2-2008 at 13:32
by: Nicodem |
Pd/C vs. Pd/BaSO4
Pd/BaSO4 is a slightly poisoned form of Pd catalyst that has some peculiar properties. For example, ... |
3-2-2008 at 13:16
by: Nicodem |
Synthesis of malonic acid
A haloform reaction on 2,4-pentadione (acetylacetone) would result in 3,3-dihalogenation which upon ... |
3-2-2008 at 13:10
by: Nicodem |
Ephedrine from Propiophenone...
[quote][i]Originally posted by Drunkguy[/i]
Why not just get alfa-methyl-styrene, make the epoxide, ... |
3-2-2008 at 03:13
by: Nicodem |
OTC PTC (Phase Transfer Catalysts)
I think this thread is already loosing its point. The concept of "phase transfer catalyst" is too wi ... |
3-2-2008 at 02:57
by: Nicodem |
OTC PTC (Phase Transfer Catalysts)
Quat phase transfer catalysts are available as antiseptics (didecyldimethylammonium chloride is one ... |
1-2-2008 at 13:54
by: Nicodem |
sodium nitromethane
That is from:
[b]Synthesis of paredrine and related compounds. [/b]
Hoover F.W., Hass H.B.
[i]J. ... |
1-2-2008 at 13:41
by: Nicodem |
aromatic formylation using TCT?
The pyrrole system is one of the most nucleophilic aromatic systems. You don't need a very much acti ... |
1-2-2008 at 09:53
by: Nicodem |
Catalytic Hydrogenation comments......
Estimating the PSI/mmol value by using PV=nRT is one way of doing it.
The other one is doing a cal ... |
1-2-2008 at 09:43
by: Nicodem |
aromatic formylation using TCT?
You would need one hell of a nucleophilic aromatic compound to get it to react with cyanuric chlorid ... |
31-1-2008 at 14:42
by: Nicodem |
Fresh Look at Sulfur Halide Rxn w/Acyl Salts
[quote][i]Originally posted by chemrox[/i]
The TCT method makes a-chloro-acids not acid chlorides.[ ... |
31-1-2008 at 14:37
by: Nicodem |
Possible Path to Tetraphenylmethane
You got me confused here. Why, after you have been told that the Friedel-Crafts alkylation can not b ... |
30-1-2008 at 02:01
by: Nicodem |
4-methoxyphenol syn using hydroquinone methyl iodide
Clearly the authors were not specialized in organic chemistry or they would not make so many mistake ... |
28-1-2008 at 11:22
by: Nicodem |
Advice needed for HF synthesis
[quote][i]Originally posted by kilowatt[/i]
I have found neutral ammonium fluoride to be the cheape ... |
27-1-2008 at 14:10
by: Nicodem |
Ephedrine from Propiophenone...
And how do you propose the "bromopropanolbenzene => norephedrine" transformation to happen?
In ... |
27-1-2008 at 14:02
by: Nicodem |
4-methoxyphenol syn using hydroquinone methyl iodide
Its just a matter of redox potentials and equilibrations among the hydroquinone, p-benzoquinone and ... |
27-1-2008 at 13:55
by: Nicodem |
A attempt at Halfapint's dimethylsulfate synthesis..
I think S. C. Wack is talking about the attached paper.
[quote][i]Originally posted by sonogashira[ ... |
27-1-2008 at 08:11
by: Nicodem |
4-methoxyphenol syn using hydroquinone methyl iodide
The previous thread on the same issue:
https://sciencemadness.org/talk/viewthread.php?tid=6284
P ... |
27-1-2008 at 01:47
by: Nicodem |
Highly explosive liquid zinc or copper compound
There is no Cu(II) acetylide since Cu(II) oxidizes acetylene to carbon. Only the Cu(I) acetylide exi ... |
27-1-2008 at 01:39
by: Nicodem |
phenylacetonitrile lockdown
I think the point PainKilla was trying to explain is that when the concept of law and legality is ex ... |
24-1-2008 at 10:59
by: Nicodem |
Toluene Nitration Results (Help)
[quote][i]Originally posted by RxnJackson[/i]
di-nitrating should require substantial heat and fumi ... |
24-1-2008 at 10:04
by: Nicodem |
Solvent free MnO4 oxidation
Melange_aqueux, do you mind being more specific? Are you asking about oxidations with MnO2 or KMnO4 ... |
24-1-2008 at 09:50
by: Nicodem |
A attempt at Halfapint's dimethylsulfate synthesis..
[quote][i]Originally posted by garage chemist[/i]
You should try pouring the oleum/MeOH reaction mi ... |
22-1-2008 at 13:07
by: Nicodem |
Synthesis of 3-(p-Hydroxyphenyl)-2-Butanone "raspberry ketone"
The reference about the influence of tertiary amines on the regioselectivity of the Reimer-Tiemann f ... |
22-1-2008 at 03:35
by: Nicodem |
Simple, but Little to no data? - reaction of sugars with alkali bases
[quote][i]Originally posted by LSD25[/i]
Sorry Nicodem, but I found this while looking up calcium s ... |
22-1-2008 at 03:19
by: Nicodem |
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