8
votes
Accepted
Comprehensive Functional-Group-Priority Table for IUPAC Nomenclature
Blue book would be indeed the reference to go to. Chemistry.se's page resources for learning chemistry though includes a contribution about nomenclature in general, including the freely accessible ...
- 26.7k
6
votes
Accepted
Stability of hexazine
How can it be so much unstable when it's structure resembles so much to that of benzene which is exceptionally stable.
Benzene is not exceptionally stable to start with. As you substitute more and ...
- 36.4k
5
votes
Accepted
Mechanism of Grignard reaction with 2-(thiiran-2-yl)oxirane
Sulfur attacking the less-hindered end of the epoxide would generate a [4] ring. This is more strained than a [3] ring and thus energetically less favourable. The attack is reversible, so the more ...
- 20.6k
4
votes
Stability of hexazine
An aromatic five-nitrogen ring is known as the pentazolate ion, $\ce{N_5^-}$. Among several documentations of this anion, which is isoelectronic with the cyclopentadienyl anion, the Wikipedia article ...
- 48.5k
3
votes
Mechanism of Grignard reaction with 2-(thiiran-2-yl)oxirane
One other aspect is after the initial opening of the sulfur-bearing ring, the sulfur ends up closer to the bridgehead carbon than to any other part of the oxirane ring. (You can see this in a ...
- 48.5k
3
votes
Is 2-pyrone an aromatic compound?
This answer discusses this situation in connection with the closely related 2-pyridone. The $4n+2$ rule does not apply at all when there are pendant pi-bonding atoms, but in the case of a carbonyl ...
- 48.5k
3
votes
Regioselectivity of SN2 reaction on adenine
If a strong base (not just the methyl iodide and the solvent) is present, then it will tend to deprotonate the $\ce{N-H}$ nitrogen on the five-membered ring, as this proton is about as acidic as one ...
- 48.5k
1
vote
synthetic procedure for 1,3,4 thiadiazole from acylhydrazide
2 steps:- react the acylhydrazide and carbon disulfide with KOH in EtOH then acidify the resulting potassium salt with sulfuric acid which causes spontaneous cyclisation to the required product as ...
- 20.6k
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