Road Map!! One of the compounds given below (A-K) has 8 Carbons and has an IR spectrum (1), does not react with NaCN in DMF, but does react with NaOH in H2O to produce a product with the IR spectrum (3), and does react with just H₂O to produce a product with the IR spectrum (2). What is the identity of the compound? 1 Jayan
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.
![**Road Map!!**
One of the compounds given below (A-K) has 8 carbons and has an IR spectrum corresponding to label (1). This compound does not react with NaCN in DMF but does react with NaOH in H₂O to produce a product with the IR spectrum labeled (3), and it reacts with just H₂O to produce a product with the IR spectrum labeled (2). What is the identity of the compound?
### IR Spectra:
#### Spectrum 1:
- **X-axis (cm⁻¹)**: Wavenumber, ranging from 4000 to 400 cm⁻¹.
- **Y-axis**: Transmittance in percentage.
- Key features include prominent peaks that might indicate functional groups.
#### Spectrum 2:
- **X-axis (cm⁻¹)**: Wavenumber, ranging from 4000 to 400 cm⁻¹.
- **Y-axis**: Transmittance in percentage.
- Displays different peaks from Spectrum 1, suggesting a reaction product.
#### Spectrum 3:
- **X-axis (cm⁻¹)**: Wavenumber, ranging from 4000 to 400 cm⁻¹.
- **Y-axis**: Transmittance in percentage.
- Exhibits peaks indicating the presence of different functional groups compared to Spectra 1 and 2.
### Compounds (A-K):
Listed are structural diagrams for 11 potential compounds. Each compound is composed of various carbon and functional groups, with structural differences that impact their reactivity and IR absorption characteristics.
Through careful examination of reactivity with NaCN, NaOH, and H₂O, alongside comparative analysis of the IR spectra, the identity of the unknown compound can be determined.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4830af55-84e9-44a3-a1a9-c9fad267ce9b%2F23d14678-ebf7-4fba-b7c4-6a8685cd370c%2F56tywem_processed.png&w=3840&q=75)
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