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.
Provide the curved arrow formalism of the compound shown below treated wtih Br2 in EtOH. Include transition states. I apprecite the help!
![The image depicts the chemical structure of 1,3-dimethylbenzene, also known as m-xylene. It belongs to the group of aromatic hydrocarbons known as xylenes.
**Structure Description:**
- **Hexagonal Ring:** The diagram shows a hexagonal ring, which represents a benzene ring, a fundamental structure in organic chemistry known for its aromatic properties.
- **Double Bond Indicator:** One of the sides of the hexagon has three alternating lines, of which the middle is thicker and bolder, indicating the presence of a double bond between the carbon atoms.
- **Substituents:** There are two lines extending from the vertices of the hexagonal ring. These lines represent methyl groups (-CH3) attached to the carbon atoms in the 1st and 3rd positions of the benzene ring.
**Explanation:**
1,3-Dimethylbenzene (m-xylene) is one of the three isomers of dimethylbenzene. The "m" in m-xylene stands for meta, indicating that the two methyl groups are positioned at the 1st and 3rd carbon atoms of the benzene ring. Xylenes are major petrochemicals, produced by catalytic reforming and also by coal carbonization in the manufacture of coke fuel.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7cf0e700-04b8-436c-802d-a46b0c93a475%2F58809410-9ae2-44a4-9a01-f975ee903e86%2Fb79h5gi_processed.png&w=3840&q=75)
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