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.
![**Title: Understanding the Major Product in Organic Reactions**
**Question:**
What is the major product of this reaction?
**Chemical Reaction:**
\[ \text{CH}_3 \] (methylcyclohexene) \( \xrightarrow{\text{HBr / Peroxides}} \) ?
**Multiple Choice Options:**
1. **Option A:**
\[
\begin{array}{c}
\text{CH}_3 \\
\|
\text{Cyclohexane ring} - \text{CH}_2\text{Br}
\end{array}
\]
2. **Option B:**
\[
\begin{array}{c}
\text{CH}_3 \\
\|
\text{Cyclohexane ring} - \text{Br} \\
\ \ \ \| \ \ \ \ \ \ \
\text{CH}_3
\end{array}
\]
3. **Option C:**
\[
\begin{array}{c}
\text{H}_3\text{C} \\
\| \ \ \ \ \ \ \
\text{Cyclohexane ring} = \text{CH}_2 \\
\ \ \ \ \ \ \ \ \ \ \ \text{Br} \\
\ \ \ \ \ \ \ \ \ \ \text{CH}_3
\end{array}
\]
4. **Option D:**
\[
\begin{array}{c}
\text{CH}_3 \\
\|
\text{Cyclohexane ring} \\
\ \ \ \| \ \ \ \ \ \
\ \ \ \ \ \text{Br} \\
\| \text{CH}_3
\end{array}
\]
**Explanation:**
In the provided image, a reaction is set up where methylcyclohexene reacts with hydrogen bromide (HBr) in the presence of peroxides. The question is asking for the major product of this reaction.
**Explanation of Options:**
1. **Option A:**
- The product is 1-bromo-2-methylcyclohexane.
2. **Option B:**
- The product is](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd6395577-9db6-48fe-8167-332a8d8ebdaf%2F79e379d0-993e-4e42-bd2d-d975fdee3682%2Fzskx9t_processed.jpeg&w=3840&q=75)
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