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Phenyl isocyanide + Benzyl magnesium bro...

Phenyl isocyanide + Benzyl magnesium bromide `overset(1.Ether Delta) underset(2.H_3 O^(oplus))rarr (A)`. The compound `(A)` is :

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B

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To solve the problem involving the reaction of phenyl isocyanide with benzyl magnesium bromide, we will follow these steps: ### Step 1: Identify the Reactants We have two reactants: - **Phenyl isocyanide**: This can be represented as Ph-N≡C, where Ph is the phenyl group (C6H5). - **Benzyl magnesium bromide**: This is represented as Ph-CH2-MgBr. ### Step 2: Understand the Reaction Conditions The reaction occurs in the presence of ether and heat (denoted by Δ). Ether acts as a solvent, and heat facilitates the reaction. ### Step 3: Mechanism of Reaction 1. **Formation of Nucleophile**: The benzyl magnesium bromide dissociates into Ph-CH2⁻ (the nucleophile) and MgBr⁺. 2. **Nucleophilic Attack**: The nucleophile (Ph-CH2⁻) attacks the carbon atom of the isocyanide (N≡C), leading to the formation of a new bond: - The nitrogen in the isocyanide has a partial positive charge due to the triple bond with carbon, making it susceptible to nucleophilic attack. - The reaction results in the formation of a compound where the nitrogen is bonded to the phenyl group and the carbon is bonded to the benzyl group. ### Step 4: Formation of Intermediate The product of the nucleophilic attack will be an intermediate compound that can be represented as: - Ph-N=C(Ph-CH2)MgBr ### Step 5: Hydrolysis Upon hydrolysis (the second step in the reaction), the magnesium bromide (MgBr) leaves, and a hydrogen atom replaces it: - The hydrolysis will yield the final product: - Ph-NH-C(Ph-CH2)=O (which is an amine). ### Step 6: Identify the Final Product The final compound (A) can be identified as N-phenyl-1-phenylethylamine, which can be represented structurally as: - N-phenyl-1-phenylethanamine ### Conclusion Thus, the compound (A) is N-phenyl-1-phenylethanamine. ### Answer The compound (A) is N-phenyl-1-phenylethanamine.

To solve the problem involving the reaction of phenyl isocyanide with benzyl magnesium bromide, we will follow these steps: ### Step 1: Identify the Reactants We have two reactants: - **Phenyl isocyanide**: This can be represented as Ph-N≡C, where Ph is the phenyl group (C6H5). - **Benzyl magnesium bromide**: This is represented as Ph-CH2-MgBr. ### Step 2: Understand the Reaction Conditions ...
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CENGAGE CHEMISTRY ENGLISH-GRIGNARD REAGENTS AND ORGANOMETALLIC REAGENTS-Exercises (Single Correct)
  1. Propane dithioic acid is prepared by the reaction of the following, fo...

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  2. Propylsulphinic acid is prepared by the reaction of the following, fol...

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  3. .

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  4. Ethanoic propanoic anhydride on reaction with excess of MeMgBr gives t...

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  5. Reactivity of MeMgBr with the following in the decreasing order is : ...

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  6. Product. The major product is :

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  7. Reactivity of with the following G.R in the decreasing order is : (...

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  8. .

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  9. Reactivity of EtMgBr with the following in the decreasing order is : ...

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  10. Reactivity of PhMgBr with the following in the decreasing order is : ...

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  11. Reactivity of PhMgBr with the following in the decreasing order is : ...

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  12. Reactivity of HCHO with the following G.R in the decreasing order is :...

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  13. Which of the following 3^@ alcohols does propyl ester give during reac...

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  14. Ethyl ester reacts with PrMgBr to give 2^@ alcohol. The alcohol is :

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  15. Methyl ester reacts with EtMgBr to give 3^@ alcohol The ester is :

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  16. Propyl ester reacts with isopropyl magnesium bromide to give 2^@ alcoh...

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  17. Propyl lithium reacts with ethene to give a compound (A), which on rea...

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  18. Coupling reaction between RMgX and R'X takes place to give R-R' in the...

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  19. Phenyl isocyanide + Benzyl magnesium bromide overset(1.Ether Delta) un...

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  20. The compound (A) in the previous question is further hydrolysed in dil...

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