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The Short Questions Thread (4)
The main root beer flavoring these days is methyl salicylate/oil of wintergreen. The original root b ...
19-10-2017 at 07:08
by: Crowfjord
Fluorinating the benzene ring
I believe trifluoromethyl groups are used where one wants a small, hydrophobic electronegative group ...
9-10-2017 at 06:45
by: Crowfjord
Good solvent system for separating aromatic amines and/or oximes on alumina TLC plates?
Ethyl acetate and methanol 2:1 with a few drops of ammonia solution worked well for me to separate t ...
6-10-2017 at 18:24
by: Crowfjord
CuSO4, Bromides, Neurotoxic Gas (LONG POST)
Can Cu[sup]2+[/sup] oxidize bromide to bromine? That's an interesting thought. Bromo or chloroaceton ...
29-9-2017 at 18:10
by: Crowfjord
Aldol condensations with formaldehyde
The reference I was thinking of relating to a nitro aldol with formaldehyde turned out to be a refer ...
25-9-2017 at 19:05
by: Crowfjord
Aldol condensations with formaldehyde
A paper regarding the subject was posted by plastics a while back, [url=https://www.sciencemadness.o ...
25-9-2017 at 16:32
by: Crowfjord
Mysterious reaction
Like the Vilsmeier-Haack, it is a formylation. This looks like a variant of the [url=http://www.scie ...
18-9-2017 at 14:11
by: Crowfjord
Optimizing Henry reaction conditions (substituted benzaldehydes + nitromethane)
[rquote=492317&tid=76743&author=Melgar]
Knoevanagel condensations can apparently refer to a ...
15-9-2017 at 07:13
by: Crowfjord
Optimizing Henry reaction conditions (substituted benzaldehydes + nitromethane)
I think it's a Knoevanagel condensation when an amine catalyst is used. This might affect the inform ...
14-9-2017 at 12:52
by: Crowfjord
Optimizing Henry reaction conditions (substituted benzaldehydes + nitromethane)
I've also recently started investigating 2-phenylethylamine as a catalyst for nitrostyrene formation ...
11-9-2017 at 13:34
by: Crowfjord
OTC Oxalyl Chloride Challenge
Dry ice accessibility is kind of touch and go. It's not usually advertised but some grocery stores w ...
2-9-2017 at 05:59
by: Crowfjord
proprionic anhydride new rt synthesis
Any details on that, or maybe a reference? Also propionic anhydride is not illegal in the US, so the ...
31-8-2017 at 13:21
by: Crowfjord
The Short Questions Thread (4)
[rquote=490610&tid=25055&author=physics inclination]Would urea and a strong base react to ma ...
18-8-2017 at 13:27
by: Crowfjord
Methylenation of catechol with dichloromethane
Nice. I probably would have used even more DMSO, the amounts you used were not all that dilute. That ...
9-8-2017 at 11:13
by: Crowfjord
POCl3,Acyls,Anhydrides,AlkalyMetals and Halogens
Phosphoryl chloride can react with acids or their salts to make the corresponding acyl chlorides, an ...
5-8-2017 at 12:50
by: Crowfjord
Bisulfite adducts, iodide adducts, solubility (ketones, aldehydes)
In my experience, bisulfite adducts tend to be soluble in water and dilute bisulfite solutions, and ...
25-7-2017 at 07:31
by: Crowfjord
Am I not allowed to own red phosphorous in the united states?
Elemental phosphorus is considered a suspicious chemical in the US, but isn't outright illegal in fe ...
14-7-2017 at 14:08
by: Crowfjord
substution reaction between ethylbromide and nitropropane
[rquote=487146&tid=75165&author=Melgar]
Granted, this would be a waste of sodium borohydrid ...
6-7-2017 at 14:15
by: Crowfjord
DMT via tryptamine and NaBH4
It's a reductive amination, with sodium borohydride instead of formic acid as the reductant. Compare ...
25-6-2017 at 13:48
by: Crowfjord
Butane extraction of something non-drug related.
Butane should extract all sorts of nonpolar things like terpines, steroids/phytosterols, fats, squal ...
4-6-2017 at 11:16
by: Crowfjord
Alternative Synthesis of 2,3-Dichlorosuccinic acid
@ subskune:

I couldn't find any proper solubility data, but from a sterochemical/optical rotatio ...
27-5-2017 at 08:23
by: Crowfjord
Alternative Synthesis of 2,3-Dichlorosuccinic acid
Melting point information for 2,3-dichlorosuccinc acid from a scifinder search. The discrepancies i ...
27-5-2017 at 06:48
by: Crowfjord
How much have you spent on your lab?
It's a rough estimate, but I think I've spent between $3000 and $5000 on chemicals and equipment ove ...
23-5-2017 at 07:23
by: Crowfjord
OTC Oxalyl Chloride Challenge
Elemental Scientific sells it as a special order chemical. Or did they go out of business? Doesn't l ...
20-5-2017 at 15:36
by: Crowfjord
Sodium Metabisulphite & Magnesium
Sounds like the magnesium might have reduced some SO[sub]2[/sub] to H[sub]2[/sub]S.

Probably some ...
20-5-2017 at 07:14
by: Crowfjord
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