5. Provide the structure for the major product in the following reactions. or b. C. OH Dia CI CI 1. SOCI₂, pyr. 2. 2 t NH₂ 1. LIAIH4 (xs) 2. H₂O 1. LIAI(OR) 3H 2. H₂O
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.
![e.
f.
g.
d.
5. Provide the structure for the major product in the following reactions.
or
a.
b.
OH
6 6 3 6
Br
1. SOCI₂, pyr.
2.
2.
2
t
1. LiAlH4 (xs)
2. H₂O
1. LIAI(OR) 3H
2. H₂O
Et₂CuLi
NH₂
1. EtMgBr (xs)
2. H₂O
1. Mg
2. CO2
3. H*
4. SOCI₂, pyr
1. [H], NaBH3CN, EtNH2
O
CI
pyridine](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd2bcede6-fd9b-472f-9a7b-9def96cfbb6f%2F8ca95333-96b3-441d-8d52-7300a75326b9%2Fe55mhe5_processed.jpeg&w=3840&q=75)
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