New answers tagged organic-chemistry
0
votes
2
votes
Reaction of NH3, primary and secondary amines with acid chlorides and anhydrides
You'll still get the amide, but only part of the substrate gets there.
When ammonia reacts with an acyl chloride to make a primary amide, the other product from the nucleophilic substitution is $\ce{...
- 61.2k
2
votes
Accepted
Concentration of H2SO4 used in the preparation of phenol from cumene
From patent US4870217A:
The cumene hydroperoxide is decomposed in the presence of a 10 to 70% aqueous sulfuric acid solution at a temperature between about 50° and 100° C. to phenol and acetone, the ...
- 26.5k
-1
votes
What is the mechanishm of the given reaction?
First rxn would be haloform test and second would be heating of beta keto acid.
1
vote
Can a Lindlar catalyst reduce aldehydes, nitriles, and carbonitriles?
For this question :
The Lindlar's catalyst is poisoned by quinoline
,Here since quinoline isn't mentioned the Pd isn't poisoned hence it will act as H2/Pd only.
You may be confused because in various ...
0
votes
Intuition of the oxidation of alcohols?
Tertiary alcohols do oxidise, though it is true that is tends to be more difficult than the oxidation of primary or secondary alcohols
- 129
0
votes
What is the SNi mechanism of the reaction of moist silver oxide with a halide?
According to my knowledge, the reaction proceeds via the SN1 route, not SNi, where H₂O is the nucleophile.
The function of AgOH is to drain electron density on Chlorine(as Ag has a partial positive on ...
0
votes
Accepted
SN2 nucleophilic substitution reaction push and pull transition state
4-Chloroquinazoline (1) has the polarized resonance structure shown in the red box. The partial negative charge is stabilized by resonance between $\ce{N1 and N3}$ while the partial positive charge is ...
- 17.3k
4
votes
Accepted
Control of alkyne coupling to obtain cyclooctadecanonaene
How is the resulting annulene's ring size regulated? We get trimerisation, but aren't other reactions very possible?
Answer to your question is "yes." If you read the given reference ...
- 41.2k
1
vote
Mechanism for reductive and oxidative "ozonide" workup
I have posted reasonable mechanism for formation of Staudinger ozonide and follow-up of reductive workup elsewhere. I found a reliable arrow-pushing mechanism for the oxidative workup in Master ...
- 41.2k
1
vote
Reaction mechanism for ozonolysis
OP's statement:
I am not able to understand what happens after the intermediate trioxolane is formed.
It is not clear because there are two trioxalanes in the mechanism, although one (1,2,3-...
- 41.2k
1
vote
Mechanism for reductive and oxidative "ozonide" workup
I think upon some research I have understood some stuff regarding the mechanism and would like to add on some stuff for summarization (although I can be completely wrong as well) †.
Firstly, the ...
- 130
4
votes
Mechanism for reductive and oxidative "ozonide" workup
If I understand you correctly, you want to known the mechanism for the reduction with zinc and oxidation with hydrogen peroxide of an ozonide. A rational mechanism may be drawn to account for the ...
- 17.3k
-1
votes
What's the mechanism behind mineral oil loosening cyanoacrylate bonds?
Does the mineral oil interact with the oil on the skin to loosen the
cured adhesive and thus break the bond between skin and cyanoacrylate?
Yes, oil modifies the surface of skin rather than the cured ...
- 296
0
votes
The meaning of the thick C-C bond and wedge-shaped C-C bond in the Haas projection of glucopyranose
Similar to the Fischer projections, the Haworth projections are a simplified representation of reality. Both are not meant to discuss a particular conformation (in the case of Haworth: about the ...
- 30.6k
2
votes
How does existence of alpha and beta form of glucose prove that it exists as a cyclic structure
I would say that without additional data, just having two crystal forms is weak support for the idea of two ring forms. Historically, they probably dissolved these two forms, showed that they ...
- 41.5k
2
votes
Why are the open-chain and cyclic forms of glucose "in equilibrium"?
In solution, alpha glucose and beta glucose interconvert via the linear form of glucose.
[OP] (1) does this mean that the two forms have the same energy, or just "close enough energy to connect ...
- 41.5k
-1
votes
Why are the open-chain and cyclic forms of glucose "in equilibrium"?
First of all, why does this reaction happen? Glucose contains both a carbonyl group and an alcoholic function (in reality more than one). From a chemical point of view, these two functional groups can ...
- 326
6
votes
Accepted
How to synthesize this cubane derivative?
I have rotated the lower half of your structure by 180° about the central C-C bond to provide a different perspective as shown in the red box (structure 1). Cubane carboxylic acid 2 is converted to ...
- 17.3k
2
votes
Accepted
Functional groups in chemical formulas
What is your intent to describe and who is your intended audience?
$\ce{C2H5OH}$ (or $\ce{EtOH}$) somewhat condense and thus highlight structural units. This naturally works best if the sub units are ...
- 30.6k
0
votes
Functional groups in chemical formulas
Thanks for asking that relevant question of good practices!
According to IUPAC's Red Book (chapter IR-4 on formulæ), two cases can be identified :
You have little to no information on structure, or ...
- 419
2
votes
What do hormones like adrenaline and testosterone look like?
So if you were to somehow get yourself a vial of pure adrenaline or testosterone, what would they physically look like to your eyes?
Both adrenaline (AKA epinephrine) and testosterone look like water,...
- 34.8k
-2
votes
Can salicylic acid be synthesized from salicylaldehyde?
Would it not be better to first convert salicylaldehyde into benzene
Remove the OH group to get benzaldehyde
Oxide the benzaldehyde into benzoic acid
Decarboxylate the benzoic acid to get just ...
- 1
6
votes
Accepted
Cyclodextrins: Is there really a hydrophobic interior and hydrophilic exterior?
Many supramolecular chemistry texts (1)(2) have described the structure of cyclodextrins. Most commonly used is the tapered cylinder model, which has a narrow face and a wide face, referred to as the ...
- 371
-1
votes
Can the bridge head carbon of a bicyclic ring be a free radical?
Bridge-head radicals are generally unstable due to angle strain and hybridization issues. However, if the resulting product from a reaction, like photobromination, is much more stable, the reaction ...
- 19
1
vote
How does Ag+ interact with Cl-?
No. There is no "saturation point" where by "$\ce{Ag+}$ does not react with $\ce{Cl-}$ ions in solution". As soon as both ions meet in solution, they produce a white $\ce{AgCl}$ ...
- 29.5k
Top 50 recent answers are included