Question 3 What is the major organic product obtained from the following sequence of reactions? A. A B C D CE HNO3, H₂SO4 CEN NO₂ B. H₂, Pd/C CN NO₂ Na₂Cr₂O7 H₂SO4 CN D 1. NaNO₂, HCI 2. CUCN COOH E 9.6 CN CN NO₂
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.
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Question 3
What is the major organic product obtained from the following sequence of
reactions?
A.
A
OB
Ⓡ
C
D
CE
HNO3, H₂SO4
CEN
NO₂
B.
H₂, Pd/C
CN
NO₂
Na₂Cr₂O7
H₂SO4
CN D
COOH
CN
1. NaNO₂, HCl
2. CUCN
E
CN
NO₂](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcc3a14d3-17e0-4f1a-b937-89b06afdc692%2F43fb4984-53a5-4bed-b9af-3ec33de0409a%2F0csfm8v.jpeg&w=3840&q=75)
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