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Azeotropic dehydration of oxalic acid with toluene
I have dehydrated oxalic acid by simply heating a sample in dish in a 110C oil bath with occasional ... |
7-6-2018 at 12:11
by: AvBaeyer |
Deciding Time for Reflux
Your real problem is running this reaction in a polar protic solvent and worse, with water present. ... |
19-5-2018 at 18:20
by: AvBaeyer |
Alkynylboronate preparation difficulties
Do you know the purity of the borate ester? How old is it? If you just ordered it, the vendor should ... |
17-5-2018 at 14:24
by: AvBaeyer |
Looming DCM Ban (US)
I simply cannot understand why anyone would go to the trouble of distilling paint remover to get met ... |
16-5-2018 at 19:05
by: AvBaeyer |
Looming DCM Ban (US)
If you read carefully, this is a ban on methylene chloride in paint strippers. I see nothing about ... |
11-5-2018 at 18:44
by: AvBaeyer |
3-acetylindole
karlos³,
Thanks for getting back to this post. As I mentioned above, the Saxton procedure produc ... |
11-5-2018 at 18:35
by: AvBaeyer |
Bulk (group buy) of Ethyl Acetate ("200 proof) & maybe NaOH & KOH in buy
I buy all my common solvents (hexane, ethyl acetate, methylene chloride, etc) from Sierra Chemical o ... |
29-4-2018 at 18:13
by: AvBaeyer |
The Sciencemadness TLC Apparatus Challenge
In terms of uniform spotting volumes, there is a commercial product called "Drummond Microcaps" whic ... |
28-4-2018 at 18:33
by: AvBaeyer |
Celite alternatives for filtering - MgCO3 & CaSO4?
One of the techniques for using celite is to first make a pad of celite in the buchner funnel and ta ... |
14-4-2018 at 18:07
by: AvBaeyer |
Help on Friedel Crafts alkylation and acylation of anisole and acetophenone
Dennis A:
I followed up your posted reference on Google Scholar and found quite a bit of interest ... |
14-4-2018 at 17:53
by: AvBaeyer |
Phenylacetonitrile from Phenylalanine
I think that using mixed and possible reactive solvents or PTC only complicates a rather simple situ ... |
13-4-2018 at 17:51
by: AvBaeyer |
Indoles forming salts?
The indole ring does not form any useful salts. The nitrogen is simply not basic. You should consult ... |
12-4-2018 at 18:39
by: AvBaeyer |
3-acetylindole
Cryolite,
I generally agree with you regarding reaction conditions if one is using a Friedel-Craf ... |
12-4-2018 at 18:30
by: AvBaeyer |
Phenylacetonitrile from Phenylalanine
I think the problem is the formation of "hot spots" around the insoluble particles of DBDMH just lik ... |
12-4-2018 at 18:13
by: AvBaeyer |
Phenylacetonitrile from Phenylalanine
As an addendum, I have recently tried using 1,3-dibromo-5,5-dimethylhydanoin (DBDMH) as the oxidizin ... |
11-4-2018 at 11:11
by: AvBaeyer |
3-acetylindole
karlos³
I have been trying to prepare 3-acetylindole using the widely cited acetic anhydride/ace ... |
11-4-2018 at 11:02
by: AvBaeyer |
reaction with Potassium Peroxymonosulfate (oxone)
Useful information on the utility of oxone in organic synthesis:
http://reag.paperplane.io/000023 ... |
9-4-2018 at 19:37
by: AvBaeyer |
tlc plate cutter
A scissor can cause bad edges which affect how the plate will run. You should use a ruler and a shar ... |
5-4-2018 at 18:22
by: AvBaeyer |
Deep Joy
Aga,
The photo you posted at the beginning is wonderful. The lighting and shadows are terrific. I ... |
5-4-2018 at 18:17
by: AvBaeyer |
Bad days in the lab or with glassware?
I was working with a solution of indole in ethanol today and some bad technique resulted in a minor ... |
1-4-2018 at 18:23
by: AvBaeyer |
Why are some esters formed easily and others not?
Consider that esters of nitrous acid, hypochlorous acid and boric acid do not form by the same mecha ... |
23-3-2018 at 18:26
by: AvBaeyer |
Compounds (API's) with various hydrate forms - what testing can differentiate these
In the "old days" hydrate numbers were obtained through regular elemental analysis IF you knew your ... |
10-3-2018 at 19:50
by: AvBaeyer |
Carbamazepine Synthesis
Ammonia is not very soluble in toluene and probably not very reactive either. If you want to use tol ... |
10-3-2018 at 19:38
by: AvBaeyer |
Preparation of “Absolute” Ethanol (<100 ppm water)
Magpie,
Your procedure is interesting but seems like a lot of work to get a relatively small amou ... |
25-2-2018 at 16:02
by: AvBaeyer |
What is the point of amateur chemistry?
What is the point of "amateur" chemistry? First and foremost, it allows you to explore the world on ... |
24-2-2018 at 19:57
by: AvBaeyer |
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