Reactive Intermediates
In chemistry, reactive intermediates are termed as short-lived, highly reactive atoms with high energy. They rapidly transform into stable particles during a chemical reaction. In specific cases, by means of matrix isolation and at low-temperature reactive intermediates can be isolated.
Hydride Shift
A hydride shift is a rearrangement of a hydrogen atom in a carbocation that occurs to make the molecule more stable. In organic chemistry, rearrangement of the carbocation is very easily seen. This rearrangement can be because of the movement of a carbocation to attain stability in the compound. Such structural reorganization movement is called a shift within molecules. After the shifting of carbocation over the different carbon then they form structural isomers of the previous existing molecule.
Vinylic Carbocation
A carbocation where the positive charge is on the alkene carbon is known as the vinyl carbocation or vinyl cation. The empirical formula for vinyl cation is C2H3+. In the vinyl carbocation, the positive charge is on the carbon atom with the double bond therefore it is sp hybridized. It is known to be a part of various reactions, for example, electrophilic addition of alkynes and solvolysis as well. It plays the role of a reactive intermediate in these reactions.
Cycloheptatrienyl Cation
It is an aromatic carbocation having a general formula, [C7 H7]+. It is also known as the aromatic tropylium ion. Its name is derived from the molecule tropine, which is a seven membered carbon atom ring. Cycloheptatriene or tropylidene was first synthesized from tropine.
Stability of Vinyl Carbocation
Carbocations are positively charged carbon atoms. It is also known as a carbonium ion.
![The image shows the chemical structure of an organic compound, specifically 2-pentanone.
### Structural Overview:
- The central framework consists of a five-carbon chain, indicating it is a pentane derivative.
- A ketone group (C=O) is present, attached to the second carbon of the chain, which classifies this molecule as a ketone.
- The ketone group consists of an oxygen atom double-bonded to the second carbon atom in the chain.
### Chemical Notation:
- The structure includes the elements:
- **C**: Carbon atoms, forming the backbone of the organic molecule.
- **H**: Hydrogen atoms, completing the valency of carbon.
### Additional Details:
- The ketone is attached to the second carbon, creating the nomenclature for 2-pentanone.
- The absence of any additional functional groups suggests its simplest form as a ketone on a pentane backbone.
This structure is commonly used to illustrate simple ketones in organic chemistry education.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6874e1f1-5298-4a44-ae8e-fa9c3662cb0d%2F98ce918e-3c8f-4cc6-9b51-c809b689d3ec%2Fsljueek_processed.jpeg&w=3840&q=75)
![c) Would "your compound" give a positive Tollen’s test?
**Explanation for Educational Context:**
The Tollen's test is a qualitative analysis used in chemistry to identify the presence of aldehydes. It involves using Tollen's reagent, which is a solution of silver nitrate (AgNO₃) in ammonia (NH₃). When an aldehyde is present, the reagent is reduced to metallic silver, forming a silver mirror on the inner surface of the container. This test is specific for aldehydes, as ketones do not generally react with Tollen’s reagent. Therefore, the question asks whether the compound has the characteristics of an aldehyde that would result in a positive Tollen’s test.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6874e1f1-5298-4a44-ae8e-fa9c3662cb0d%2F98ce918e-3c8f-4cc6-9b51-c809b689d3ec%2Flx1bmur_processed.jpeg&w=3840&q=75)
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