Which of the following groups is a weak +M director?

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Question: Which of the following groups is a weak +M director?

Options:

Correct Answer: -CH3

Solution:

-CH3 is a weak +M director as it can donate some electron density but is less effective than -OH or -OCH3.

Which of the following groups is a weak +M director?

Which of the following groups is a weak +M director?

Step 1: Understand what +M director means. +M directors are groups that can donate electron density to the aromatic ring, making it more reactive.
Step 2: Identify the groups mentioned in the question. We are looking for groups that can donate electrons.
Step 3: Recognize that -CH3 (methyl group) can donate some electron density to the aromatic ring.
Step 4: Compare -CH3 with other groups like -OH (hydroxyl) and -OCH3 (methoxy). These groups are stronger +M directors than -CH3.
Step 5: Conclude that -CH3 is a weak +M director because it donates electrons but not as effectively as -OH or -OCH3.

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