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Bakelite is made from phenol and formaldehyde. The initial reaction between them is the example of :
  • a)
    Electrophilic aromatic substitution
  • b)
    Nucleophilic aromatic substitution
  • c)
    Free radical reaction
  • d)
    Aldol reaction
Correct answer is option 'A'. Can you explain this answer?
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Bakelite is made from phenol and formaldehyde. The initial reaction be...
The reaction of phenol and formaldehyde, is called Lederer Mannase reaction. It follows electrophilic substitution and rearrangement reaction.

 
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Bakelite is made from phenol and formaldehyde. The initial reaction be...
Electrophilic aromatic substitution
When phenol and formaldehyde react to form Bakelite, the initial reaction between them is an example of electrophilic aromatic substitution. This reaction involves the substitution of a hydrogen atom on an aromatic ring with an electrophile.
Phenol and formaldehyde reaction
- Phenol and formaldehyde react to form a molecule called hydroxymethyl phenol.
- This reaction is initiated by the attack of the hydroxyl group of phenol on the electrophilic carbon of formaldehyde.
- The resulting intermediate undergoes further reactions to form the final Bakelite polymer.
Electrophilic aromatic substitution mechanism
- In electrophilic aromatic substitution, the aromatic ring acts as a nucleophile attacking an electrophilic species.
- The attack leads to the formation of a sigma complex intermediate, which is stabilized by resonance.
- Subsequent steps involve the removal of a proton to regenerate the aromatic character of the ring.
Importance of electrophilic aromatic substitution in Bakelite formation
- The electrophilic aromatic substitution reaction is crucial in the formation of Bakelite as it allows for the incorporation of formaldehyde into the aromatic ring of phenol.
- This reaction pathway leads to the formation of a three-dimensional network polymer known as Bakelite, which possesses valuable properties such as heat resistance and electrical insulation.
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Bakelite is made from phenol and formaldehyde. The initial reaction between them is the example of :a)Electrophilicaromatic substitutionb)Nucleophilic aromatic substitutionc)Free radical reactiond)AldolreactionCorrect answer is option 'A'. Can you explain this answer?
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