7 votes

FTIR Spectra: Did I synthesize ethyl gallate from gallic acid?

The short answer: consider a technique complementary to IR spectroscopy, for instance $\ce{^1H}$-NMR spectroscopy. Your have good luck, as the public AIST spectral database holds records of IR spectra ...
Buttonwood's user avatar
  • 29.8k
7 votes

Nomenclature of C6H5CO-O-NH2

According to the last printed version of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book), the retained name hydroxylamine was used for the construction ...
Loong's user avatar
  • 4,812
6 votes
Accepted

Using potassium dichromate and sulfuric acid to clean test tubes after Tollens' Test

This mixture, often called "chromic acid," is a common way to clean glassware. It is a strongly oxidizing acid which reacts with most organic material, so it is able to remove most types of ...
anon's user avatar
  • 848
6 votes

FTIR Spectra: Did I synthesize ethyl gallate from gallic acid?

In determining whether you successfully synthesized ethyl gallate from your gallic acid precursor, let's go over what differences between the two you should expect in your spectra. Ethyl gallate (...
Melanie Shebel's user avatar
4 votes

Can someone help me name this molecule?

The motif in the center is carbonic acid, hence your compound is a carbonate as for instance dimethyl carbonate. (Perhaps the BOC group is known to you as a protection of amines, too.) To the left of ...
Buttonwood's user avatar
  • 29.8k
4 votes
Accepted

Oxidation Number of the middle carbon in $\ce{C3O2}$ (Carbon Suboxide)

First off, carbon suboxide is much closer to being linear than formally isoelectronic species such as $\ce{N5^+}$. The energy difference between linear and bent conformations is so small it gets ...
Oscar Lanzi's user avatar
  • 57.4k
3 votes
Accepted

Can we use phosphorus triiodide in Hell-Volhard-Zelinsky reaction?

[OP] 1. Why are these reaction considered as iodine analog of HVZ reaction? Doesn't HVZ reactions strictly uses phosphorus halides? If you look at the mechanism (pasted below from Wikipedia), you see ...
Karsten's user avatar
  • 40.3k
3 votes

What are the best conditions for EDC coupling of 2 small molecules?

For this reaction the optimal buffer conditions are a pH of 4.5-5.5, which is slightly acidic. The reaction mixture should be stirred at room temperature for several hours to overnight. Common buffers ...
Alex's user avatar
  • 93
3 votes
Accepted

Glutaraldehyde or Glutardialdehyde

Many articles I've read, just mention glutaraldehyde, not glutardialdehyde. Not only Merck, but also Sigma-Aldrich listed glutardialdehyde (25% solution) and glutaraldehyde (25% solution) under the ...
Mathew Mahindaratne's user avatar
3 votes

Comparison of C=O bond strength in metal carbonyls

A common measure of $\ce{C-O}$ bond strength is $\ce{C-O}$ distance. For $\ce{[Fe(CO)5]}$ the data can be found, for example, in paper 1, where values of 1.12-1.14 Å are reported. For $\ce{[V(CO)6]-}$ ...
permeakra's user avatar
  • 21.6k
3 votes

Is acetophenone a saturated compound?

This case explains a problem with using "saturated" versus "unsaturated". The boundary in real chemistry is not as distinct as the words would seem to imply because the behavior of ...
Oscar Lanzi's user avatar
  • 57.4k
2 votes

Should I remove inhibitor from methyl acrylate?

It is common for the hydroquinone inhibitor to be added to aclates to prevent polymerization during storage. It is possible that MEHQ could react with the amine and hinder the aza-Michael addition. To ...
Alex's user avatar
  • 93
2 votes

Mechanism for formation of amides from ammonium carboxylate salts

The question is about mechanism of amidation not from R-NH2/R'-COOH but from their salt R-NH3+/R'-COO-. The former is well known and the only mechanism of amidation. The salt R-NH3+/R'-COO- is always ...
Jin Chul Jung's user avatar
2 votes

Why is benzoic acid a stronger acid than 3-aminobenzoic acid?

3-Aminobenzoic acid exists as a zwitterion in solution (just like aminoacids, which the given compound is, just not natural) thus instead of existing as $\ce{C6H4(COOH)(NH2)}$ it exists as $\ce{C6H4(...
Kamal Koushik Duppalapudi's user avatar
1 vote

Should I remove inhibitor from methyl acrylate?

I would not worry that the typical polymerization inhibitors added to acrylic esters will interfere with the aza-Michael reaction. I guess you will add the amine in excess, and the relatively small ...
Snijderfrey's user avatar
1 vote

Do the amino groups in EDTA deprotonate first, in contrast to amino acids?

Dissolved in water, EDTA can have net charges varying from -4 to +2, from fully deprotonated to all four carboxylic acid groups and two amine groups protonated. It is the fully deprotonated form that ...
Karsten's user avatar
  • 40.3k

Only top scored, non community-wiki answers of a minimum length are eligible