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Free flasks
I have two (2) 6-liter fermentation flasks that are taking up valuable space. These are large Floren ...
29-7-2020 at 13:57
by: AvBaeyer
Getting Discouraged With Organic Chemistry As A Hobby. Failed Steglich Esterification
Cou,

Attached is a paper which may be quite useful to you. It uses only easily available and rela ...
20-7-2020 at 19:13
by: AvBaeyer
Getting Discouraged With Organic Chemistry As A Hobby. Failed Steglich Esterification
I have run many Steglich esterifications using both DCC and carbonyldiimidazole (CDI) mostly to make ...
17-7-2020 at 21:08
by: AvBaeyer
Coal & Derivatives
If you look in the SciMad library, you will find "The Chemistry of Coal Tar Dyes." Chapter 2 is a di ...
14-7-2020 at 18:02
by: AvBaeyer
Cou's esters megathread
A note on loss of taste and smell.

I was in Italy last May and June when I cam down with a horrib ...
10-7-2020 at 18:26
by: AvBaeyer
Clomethiazole by Vitamine b1 cleavage
I can say that the sulfite cleavage works quite well. The extraction of the thiazole portion is diff ...
28-6-2020 at 20:16
by: AvBaeyer
how to distinguish a solution containing chloroform from one with dichloromethane?
Ubya,

From "A Handbook of Organic Analysis" by H.T. Clarke and J.N. Collie several tests for chlo ...
28-6-2020 at 20:09
by: AvBaeyer
Latest chemical order?
Cou,

Be careful, very careful, with n,n-dicyclohexylcarbodiimide (DCC). It is a wicked sensitize ...
19-6-2020 at 18:20
by: AvBaeyer
High precision analytical balance/scale 120g at .001g & 6kg at .01g resolution
I bought an analytical balance on eBay once which was guaranteed to be in working condition. It was ...
12-6-2020 at 17:59
by: AvBaeyer
Silica gel mystery?
Ubya,

Really a nice piece of work! It shows what can be done when experiments are really done and ...
5-6-2020 at 17:52
by: AvBaeyer
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
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