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.
Please draw using skeletal structure and draw substituents as far to the left, according to the priorities listed (1-5) in second picture
![1. Monosubstituted benzene
2. Oxygen, nitrogen
3. C=O double bonds
4. C=C double bonds
5. Halogens
instead of
instead of](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2d95edf5-a7eb-463b-b7f4-ca02808af034%2F84282df6-64b7-419a-999f-6fc18201d3b9%2Fv3pb6wp_processed.jpeg&w=3840&q=75)
![3. Draw the structure of the compound whose spectroscopy data follows:
MS m/z (% relative abundance):
77 m/z (40%), 79 m/z (20%), 105 m/z (100%), 154 m/z (21%), 156 m/z (7%)
4000 3600 3 O 3400
1200
1000
S00
600
1800
1600
1400
3200 3000
2800 2600 2400 2200
2000
Wavenumber (em)
2
2
6.
4
3
8 (ppm)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2d95edf5-a7eb-463b-b7f4-ca02808af034%2F84282df6-64b7-419a-999f-6fc18201d3b9%2Fnaz0wv9_processed.jpeg&w=3840&q=75)
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