Which of the following compounds will undergo Friedel-Crafts alkylation with (CH

Question

Which of the following compounds will undergo Friedel-Crafts alkylation with (CH3&CC1;, AICI3 most rapidly? acetophenone iodobenzene toluene cyan benzene benzenesulfonic acid Which of the following compounds will react most rapidly when treated with CH3CH2CI and AICI3? anisole benzene chlorobenzene nitrobenzene toluene the nitration of anisole: proceeds more slowly than the nitration of benzene and yields predominantly the ortho, para products. proceeds more rapidly than the nitration of benzene and yields predominantly the ortho, para products. proceeds more rapidly than the nitration of benzene and yields predominantly the meta product. proceeds more slowly than the nitration of benzene and yields predominantly the meta product. proceeds at the same rate as the nitration of benzene and yields predominantly the meta product.

Explanation / Answer

The electrophilic substitution reaction wll be faster if electron donating group is present on the aromatic rig.

14. The toluene will undergo fridel crafts akylation faster, other compounds have electron with drawing group substituents, which will slow down the reaction.

15. Anisole, because -OCH3 is electron donating group.

16. proceeds more rapidly than the nitration of benzene and yiels predominately, ortho, para products.

Note: electro donating groups direct incoming electrophile to ortho, para positions.

whereas electron withdrawing groups direct incoming electrophile to meta position.

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