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Dark Sulfuric Acid
I have purchased sulfuric acid from Duda in the past. It arrived nearly colorless in plastic bottles ...
24-3-2017 at 18:43
by: AvBaeyer
Are these reactions likely to happen?
The second reaction will definitely NOT happen as written. Think about the pKa's involved here. The ...
10-3-2017 at 19:55
by: AvBaeyer
looking for a good proceedure for methylamine

You can easily hydrolyze N-methylformamide with 6M hydrochloric acid to get N-methylamine hydrochl ...
10-3-2017 at 19:44
by: AvBaeyer
Thoughts on a cheap vacuum pump?
Go for it! I have one just like this which will pull 0.3 - 0.5 mm Hg on a well set up vac distillati ...
10-3-2017 at 12:18
by: AvBaeyer
Making bromine (super cheap and easy, no destillation, quantitative yield)
Panache,

I make iodide "on demand" using oxone and potassium iodide. The iodine precipitates imme ...
9-3-2017 at 20:39
by: AvBaeyer
5-Oxo-2-tetrahydrofurancarboxylic acid (butyrolacton-5-carboxylic acid) from glutamic acid
The use of glutamine results in the lactone product, see ref 1 in my post. Cyclization does not proc ...
5-3-2017 at 12:44
by: AvBaeyer
5-Oxo-2-tetrahydrofurancarboxylic acid (butyrolacton-5-carboxylic acid) from glutamic acid
I have added references to literature mps for the target compound which I forgot in the initial pos ...
4-3-2017 at 11:14
by: AvBaeyer
5-Oxo-2-tetrahydrofurancarboxylic acid (butyrolacton-5-carboxylic acid) from glutamic acid
Introduction

I anticipated using 5-oxo-2-tetrahydrofurancarboxylic acid as an intermediate in a m ...
3-3-2017 at 20:52
by: AvBaeyer
Cutting and Pasting Structures into Posts
Thanks to all for your comments. I will try to get the structures and synthesis routes inserted by ...
27-2-2017 at 19:19
by: AvBaeyer
Cutting and Pasting Structures into Posts
I have several experimental write ups I wish to post but I am frustrated by the inability to directl ...
26-2-2017 at 20:39
by: AvBaeyer
Where can I buy needles/CannulaNeedles/Septa for inert atmosphere setups?
I have made cannulas from cut off syringe needles and teflon tubing. This allows getting the length ...
18-2-2017 at 19:40
by: AvBaeyer
Does anyone have experience setting up an account with Sigma?
A few years back I set up an account with Sigma-Aldrich for a newly started biotech company. We had ...
18-2-2017 at 19:34
by: AvBaeyer
My First Grignard
Meltonium,

Good report! You picked a very tough set of reactants to introduce yourself to a Grign ...
14-2-2017 at 20:24
by: AvBaeyer
Decided on a goal - chloramphenicol.
Pirate:

You may find some of the chemistry in these two patents useful.

AvB
10-2-2017 at 20:30
by: AvBaeyer
Benzaldehyde synthesis using aqueous nitric acid
Amos,
Some of your observations are similar to my own while studying the nitration of toluene with ...
4-2-2017 at 18:56
by: AvBaeyer
Tosylation of ethanolamine (??)
My post of the experimental procedure explicitly stated the use of pyridine. I do not believe it is ...
2-2-2017 at 15:41
by: AvBaeyer
yellow pigment in lemon: extraction
Jamit,

The color is largely due to carotenoid compounds and to some extent flavonoids. The yellow ...
25-1-2017 at 21:05
by: AvBaeyer
Benzoquinone from Paracetamol
I have read the paper posted by JJay a while back. It is truly not useful as the basis of a syntheti ...
19-1-2017 at 15:32
by: AvBaeyer
Chemglass hotplate controllers - "shorted" sensor
I have a couple Chemglass stirrer hotplates. On the back there is a round plug receptacle. As you lo ...
17-1-2017 at 19:25
by: AvBaeyer
nonmetal reducing agent like LAH
FYI - Borohydride easily reduces esters in the presence of methanol. Many refs to this reduction are ...
8-1-2017 at 18:52
by: AvBaeyer
Mettler B5/B6 Series Manual EN/FR/GER
My problem is that I have no scale projected on the screen at all. I bought the balance for little c ...
8-1-2017 at 18:47
by: AvBaeyer
Mettler B5/B6 Series Manual EN/FR/GER
I also need a manual for a Mettler B5. I bought one about a year ago and I cannot get it to function ...
7-1-2017 at 20:30
by: AvBaeyer
Tosylation of ethanolamine (??)
I agree with Nicodem that the solvent of choice for triethylamine tosylations is dichloromethane. Wh ...
4-1-2017 at 19:51
by: AvBaeyer
Is inert gas mandatory for handling DIBAL?
I have used a lot of DIBAL in years past. If at all possible you should use an inert atmosphere. Any ...
4-1-2017 at 19:34
by: AvBaeyer
What happened to GalliumSource?
I went to the site to place an order and the company is gone. Anyone know what happened?

AvB
3-1-2017 at 16:47
by: AvBaeyer
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