Select an efficient synthesis of 2-heptyne from acetylene. [1]NaNH2, NH3 [1]NaNHz. NH3 [2] H- H=H H= H = H [2] [1]NaNH2. NHs [2] Br [2] Br [1]NaNH2, NH3 [1]NaNH2. NHs [2] 'Br [2] [1]NaNH2. NH3 Br [1]NaNH, NH3 Br Br Br
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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Select an efficient synthesis of 2-heptyne from acetylene.
[1]NaNH2, NH3
[1]NaNHz, NHs
[2]
H =
H-
H
-H
3 attempts left
[2]
[1]NaNH2. NHs
[2] -Br
[1]NaNH2, NH3
[1]NaNH2. NHs
[2]
Br
Br
[2]
Check my work
[2]
Br
[1]NaNH2. NH3
[1]NaNH2, NH3
Br
Br
Br](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F933d84f0-ca82-48db-a2d0-a62b4dc452ec%2F3d59704c-082e-4d1f-ad8e-ec49739810ea%2F0gplyqb_processed.jpeg&w=3840&q=75)
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