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Multiple Choice
Predict the major, organic product for the following reaction.
A
B
C
D
Verified step by step guidance
1
Identify the type of reaction: The reaction involves a benzene ring with a nitro group (NO2) and a tert-butyl group, reacting with Cl2 in the presence of AlCl3. This is a Friedel-Crafts halogenation reaction.
Determine the directing effects of substituents: The nitro group (NO2) is a strong electron-withdrawing group and is meta-directing, while the tert-butyl group is an electron-donating group and is ortho/para-directing.
Predict the major product: The presence of the strong electron-withdrawing nitro group will dominate the directing effects, leading to chlorination at the meta position relative to the nitro group.
Consider steric effects: The tert-butyl group is bulky, which may influence the position of chlorination by making the ortho positions less favorable due to steric hindrance.
Conclude the major product: Based on the directing effects and steric considerations, the major product is likely to be the one where the chlorine is added to the meta position relative to the nitro group, avoiding steric hindrance from the tert-butyl group.