| Search |
| [Next Page] |
Gentle rust removal w/o nasty residues
A solution of citric acid has given me good results with derusting cast iron parts. It has given me ... |
5-12-2017 at 08:58
by: Sigmatropic |
Protecting weak secondary amines - driving me crazy!
Using TMS as a transient protecting group would still fall under the general scheme of O-protection, ... |
24-11-2017 at 10:07
by: Sigmatropic |
Why is silver antibacterial?
I suspect AKJOER has the answer to this question, although probably in a convoluted manner.
[Edite ... |
22-11-2017 at 10:23
by: Sigmatropic |
Stereochemistry of product in Grignard-Gilman addition reaction
If you push down that carbon while the phenyl attacks on top you get some seriously distorted geomet ... |
21-11-2017 at 22:39
by: Sigmatropic |
Yellow calcium chloride
I too have noticed a yellow color when mixing sulfuric acid and commercial calcium chloride. I presu ... |
21-11-2017 at 09:14
by: Sigmatropic |
Stereochemistry of product in Grignard-Gilman addition reaction
Cyclohexene derivatives are not in a true chair conformation, hence there is no such thing as an axi ... |
20-11-2017 at 10:17
by: Sigmatropic |
Protecting weak secondary amines - driving me crazy!
What I'm saying is that, based on pKa values, one equivalent of NaH gets you the O-anion which when ... |
15-11-2017 at 09:20
by: Sigmatropic |
Protecting weak secondary amines - driving me crazy!
C3 Bocylation seems unlikely to me as the product loses aromaticity in the indole ring. Of course th ... |
14-11-2017 at 14:57
by: Sigmatropic |
Decarboxylation ester to alcohol autoclave.
Have not heard of anything even close to this. What kind of Carboxylic acids are we talking about? A ... |
11-11-2017 at 12:01
by: Sigmatropic |
Sleeve septa
I've recently used a septa on a vessel under relatively high vacuum (during freeze-pump-thaw cycles) ... |
5-11-2017 at 10:44
by: Sigmatropic |
coumarin 7 synthesis
May I suggest instead the synthesis of fluorescein and eosin for people limited in materials and equ ... |
3-11-2017 at 10:00
by: Sigmatropic |
coumarin 7 synthesis
zts, remember that aniline is protonated under conditions of nitration. Nitration of aniline affords ... |
2-11-2017 at 14:46
by: Sigmatropic |
coumarin 7 synthesis
I would be pretty tempted to attempt the installation of the benzimidazole as the final step and wit ... |
2-11-2017 at 11:08
by: Sigmatropic |
Separation of glyceryl ester enantiomers ?
Perhaps you can start from an enantiomerically pure epichlorhydrin and later on hydrolyse the epoxid ... |
1-11-2017 at 10:01
by: Sigmatropic |
The Short Questions Thread (4)
solutions of LiCl in water are hygroscopic, which makes alot of sense since the solid is deliquescen ... |
24-10-2017 at 12:16
by: Sigmatropic |
What is the product of the following equations
ethanol + sulfuric acid could form ethyl sulfuric acid, ethene, diethyl sulfate depending on exact c ... |
18-10-2017 at 12:04
by: Sigmatropic |
Organic chem video favour
Ball and stick models are actually quite slow to build up and when breaking down it makes these plop ... |
17-10-2017 at 11:34
by: Sigmatropic |
Organic chem video favour
Corners represent carbon atoms with full octet. Hydrogen atoms are omitted for clarity as it would b ... |
17-10-2017 at 09:27
by: Sigmatropic |
Organic chem video favour
Seems to check out, although I wouldn't consider it a substitute for a good book. In my opinion the ... |
17-10-2017 at 07:54
by: Sigmatropic |
Interesting uses for Barbital?
That chemical that requires bomb squad disposal is likely picric acid or more likely 2,4-dinitrophen ... |
9-10-2017 at 13:13
by: Sigmatropic |
Acetate from Sulphate
Get a decent amount of calcium or barium acetate. These salts forms practically insoluble sulfate sa ... |
4-10-2017 at 21:53
by: Sigmatropic |
OTC pyrazole synthesis
From what I remember from something I once looked up for a synthesis towards fomepizole.
Careful ... |
31-8-2017 at 13:03
by: Sigmatropic |
Alkyl Chloride preparation without anhydrous zinc chloride?
Simply refluxing butanol with HCl or in aqueous HCl is not going to afford butyl chloride. The affin ... |
31-8-2017 at 12:32
by: Sigmatropic |
convert anhydride to ketone
Hydrolysis, neutralization with calcium oxide or hydroxide then dry distill.
Could you provide a li ... |
27-8-2017 at 22:52
by: Sigmatropic |
Strange element names and codes
Natrium, kalium and wolfraam are perfectly correlated with their abbreviation in my language, which ... |
18-8-2017 at 11:26
by: Sigmatropic |
| [Next Page] |
