1.Which of these compounds does not exist: a) ortho tetra bromobenzene b) butan-3-ol c) propan-3-one d) heptan-2-al e) c and d only f) all of the above
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.
![Multiple choice
1.Which of these compounds does not exist:
a) ortho tetra bromobenzene
b) butan-3-ol
c) propan-3-one
d) heptan-2-al
e) c and d only
f) all of the above
2.An ether can be represented by the molecular formula
a) R-OH
b) R-COO-R'
c) R-C (O) H
d) R-C (O) -R'
e) R-O-R
3.The following ester:
Can be synthesized from the following compounds:
a) methanol and butanoic acid
b) ethanol and pentanoic acid
c) butanol and methanoic acid
d) pentanol and methanoic acid
e) pentanol and acetic acid](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a6b5ba4-d2f1-4857-9c9f-dac43728d426%2F98eccfc5-b082-46ab-b68d-e6ab23815abe%2Flm8uwqg_processed.jpeg&w=3840&q=75)
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