Which of the following compounds is most reactive towards electrophilic substitu

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Question: Which of the following compounds is most reactive towards electrophilic substitution?

Options:

Correct Answer: Toluene

Solution:

Toluene is most reactive due to the electron-donating effect of the methyl group, which activates the ring towards electrophilic substitution.

Which of the following compounds is most reactive towards electrophilic substitution?

Which of the following compounds is most reactive towards electrophilic substitution?

Step 1: Understand what electrophilic substitution means. It is a reaction where an electrophile replaces a hydrogen atom in an aromatic compound.
Step 2: Identify the compounds given in the question. Look for toluene and other aromatic compounds.
Step 3: Recognize that some groups attached to the aromatic ring can either donate or withdraw electrons.
Step 4: Note that the methyl group in toluene is an electron-donating group. This means it helps to increase the electron density in the aromatic ring.
Step 5: Realize that a higher electron density in the ring makes it more reactive towards electrophiles.
Step 6: Compare toluene with other compounds. If they have electron-withdrawing groups, they will be less reactive than toluene.
Step 7: Conclude that toluene is the most reactive compound towards electrophilic substitution because of the electron-donating effect of the methyl group.

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