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Silica gel mystery?
Diatomaceous earth (aka kieselguhr) has indeed been widely used in the past for chromatography and s ...
24-5-2020 at 19:07
by: AvBaeyer
Silica gel mystery?
Ubya,

I have NEVER heard of having to boil silica gel in acid to activate it. However, I looked u ...
15-5-2020 at 18:39
by: AvBaeyer
Silica gel mystery?
Chromatography grade silica gel is made under carefully controlled conditions to control the pore si ...
14-5-2020 at 18:32
by: AvBaeyer
The credibility of syntheses around?
There appears to be general misunderstanding here about experimental procedures in patents. First of ...
2-5-2020 at 19:30
by: AvBaeyer
Using Palladium on carbon
Palladium on carbon is a very versatile catalyst if you understand how to use it and have the proper ...
2-5-2020 at 19:01
by: AvBaeyer
Modified synthesis of chloroquine, beginning from benzoic acid
This looks like one of those sophomore org chem road map problems. You might find it instructive, si ...
7-4-2020 at 18:59
by: AvBaeyer
A theoretical total synthesis of chloroquine I thought up this afternoon
Bob,

I am very curious about how the chloroquine compounds actually work. I had a good deal of ex ...
19-3-2020 at 19:15
by: AvBaeyer
Preparation of Thalidomide
Karlos:

Interesting report. Finally some real chemistry being posted - thank you. Here are a coup ...
8-3-2020 at 18:53
by: AvBaeyer
CaCO3 in toluene: a superbase?!
I read this paper and found it to be less than satisfying. I was puzzled by the use of acetic acid t ...
4-3-2020 at 19:45
by: AvBaeyer
Science equipment looking for a home
Dr Bob,

I have a 1 L heating mantle with the large plug you describe. Other than that it has been ...
26-2-2020 at 20:12
by: AvBaeyer
Al(O-i-Pr) decomposition problem
The suggestion to use very dilute acid is a good one. In that case I would try dilute citric acid as ...
23-2-2020 at 19:18
by: AvBaeyer
a new OTC Mukaiyama-like coupling reagent from thiamin?
clearly_not_atara:

I know that if you dig a bit deeper you will find that the chemistry of pyridi ...
22-2-2020 at 19:33
by: AvBaeyer
Possible OTC, 'safe' methylating agents
It is critical that the oxalic acid is anhydrous. I have done the OrgSyn prep of dimethyl oxalate. I ...
17-2-2020 at 16:58
by: AvBaeyer
Possible OTC, 'safe' methylating agents
I suggest that dimethyl oxalate be explored as an easy to obtain methylation reagent in the home lab ...
16-2-2020 at 19:52
by: AvBaeyer
Everyday Chemistry (provisional)
Abromination:

Your esterification experiment is interesting but I believe demands a bit more rigo ...
15-2-2020 at 19:41
by: AvBaeyer
Molecule of the Month Website
I was doing a Google literature search today and stumbled upon "The Molecule of the Month" website. ...
31-1-2020 at 17:59
by: AvBaeyer
Can amateurs buy thionyl chloride from www.chemsavers.com?
There ain't no way any halogenating agent like SOX2, PX3, PX5 and similar (where X is your favorite ...
29-1-2020 at 20:15
by: AvBaeyer
Methods for preventing over addition of Grignard reagent
" I am hoping to avoid air-sensitive reactions though as I don’t have the materials to produce ine ...
29-1-2020 at 19:55
by: AvBaeyer
Emulsions from MgSO4?
At the risk of being reprimanded I will ask: You are using anhydrous MgSO4 and not epsom salts? If a ...
12-1-2020 at 20:40
by: AvBaeyer
Can amateurs buy thionyl chloride from www.chemsavers.com?
I advise you to avoid using thionyl chloride in a home lab setting. This is truly nasty stuff and al ...
12-1-2020 at 20:33
by: AvBaeyer
Bromination not going as expected??
First, 1 mole of bromine will brominate 1 mole of olefin. You do not need any excess bromine. The r ...
29-12-2019 at 21:34
by: AvBaeyer
Preparation of weak hydroiodic acid(for making NaI)
It is possible to convert iodine directly to an iodide salt via aqueous redox chemistry. This is des ...
29-12-2019 at 21:05
by: AvBaeyer
Using conc H2SO4 + NaCl to chlorinate alcohols?
Sulfuric acid is not necessarily fatal to isopropanol. Isopropyl bromide can be made from H2SO4 and ...
17-12-2019 at 19:39
by: AvBaeyer
Not so secret Santa thing
A very heavy box arrived today. My wife pulled it from the mailbox and immediately assumed I was up ...
17-12-2019 at 19:26
by: AvBaeyer
Magpie has died
What terrible and devastating news. Magpie and I exchanged email messages over the years which I rea ...
12-12-2019 at 19:44
by: AvBaeyer
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