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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
Tosylation of ethanolamine (??)
DrDevice:

Your reaction work up was incomplete. After filtration of the triethylamine hydrochlor ...
3-1-2017 at 16:42
by: AvBaeyer
Hydroquinone from p-DCB
The DMSO effect you are musing about only occurs in anhydrous DMSO. The aqueous solution you used co ...
3-1-2017 at 16:23
by: AvBaeyer
Literature for insight?
JJay,

I should have been more clear - see the references and suggestions in the Preface. Therein ...
31-12-2016 at 14:43
by: AvBaeyer
My library
I love those old books! And indeed pleasure is finding new volumes to add to the collection. I just ...
31-12-2016 at 14:29
by: AvBaeyer
Literature for insight?
JJay

With regard to your request about a book for determining how to determine reaction condition ...
31-12-2016 at 14:07
by: AvBaeyer
My library
Magpie,

I am envious of the Adams/Marvel bulletins - what a find.

My most useful go-to books ...
30-12-2016 at 20:25
by: AvBaeyer
High School Chem Lab Manual from 1960's
I recently found an on-line copy of the CHEM Study laboratory manual used in the 1960's (the good ol ...
30-12-2016 at 20:00
by: AvBaeyer
Mg/Methanol is amazing
A procedure for reducing halides to the corresponding hydrocarbon using Mg/i-PrOH can be found in Or ...
29-12-2016 at 20:24
by: AvBaeyer
nonmetal reducing agent like LAH
Sodium borohydride will easily reduce carboxylic acids via an ester, imidazolide, mixed anhydride or ...
29-12-2016 at 15:12
by: AvBaeyer
Get Your U.S. DBDMH While You Can!
I have used DBDMH quite extensively and have previously mentioned the Brilliance product and its ava ...
28-12-2016 at 16:26
by: AvBaeyer
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