OH 2. 3. 4. 5. terephthalic acid CH3 OH CH3 c=c + H₂N H H + ethane 1,2 H 2-methyl prop-1-ene 2-methylbutanal NH₂ di amine OH HF hydrogen + [H]- fluoride + HCI cepted. strong acid catalyst
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.
![1.
OH terephthalic
acid
2.
3.
4.
5.
CH3
OH
CH3
C=C
+ H₂N
H
H
ethane 1,2
+ HF
H
2-methyl prop-1-ene
2-methylbutarial
di amine
NH₂
OH
hydrogen
fluoride
+ [H]-
+ HCI
strong acid
catalyst](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F595d50cd-9365-4e4a-a4c8-9edd9dd2e5bf%2Fb24307e8-c2d9-48c9-91cb-195c12321336%2Ftyed5rn_processed.jpeg&w=3840&q=75)
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