1. 2. a = Proton transfer b = Lewis acid/base c = Electrophilic addition Na CN 1. 2. conc. HBr DMF H₂C CN CH3 OH OH d = E1 Elimination e = E2 Elimination Brt The rections above involve synthesis or reactions of alcohols and ethers. Identify the mechanism by which they proceed from among the mechanisms listed. Use the letters a-g for your answers. f = SN1 Nucleophilic substitution gSN2 Nucleophilic substitution
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.
![2.
a = Proton transfer
b = Lewis acid/base
C = Electrophilic addition
Na CN
1.
2.
conc. HBr
DMF
CH3
H OH
H3C H
CN
OH
d = E1 Elimination
e = E2 Elimination
Bit
Bri
The rections above involve synthesis or reactions of alcohols and ethers.
Identify the mechanism by which they proceed from among the mechanisms listed. Use the letters a- g for
f =
SN1 Nucleophilic substitution
g = SN2 Nucleophilic substitution
your answers.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff6fb7511-1856-448d-bebf-6dbc22fbc7f8%2F61df894b-a553-4f38-b76a-f486e7aa34ab%2Ffyign5l_processed.png&w=3840&q=75)
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