I need all answers asap please!!! 19. In electrophilic aromatic substitution rea

Question

I need all answers asap please!!! 19. In electrophilic aromatic substitution reactions, a-CO2H substituent on the aromatic ring is D) an activator and an o,p-director. A) a deactivator and a m-director. B) a deactivator and an o,p-director. none of the above. an activator and a m-director. 20. In electrophilic aromatic substitution reactions, a cyano substituent on the aromatic ring is D) an activator and an o,p-director A) a deactivator and a m-director. B) a deactivator and an o,p-director, C) an activator and a m-director. 21. Which of the following compounds will not undergo Friedel-crafts acylation when treated with CH3CH2COCI, AICly? D) ethoxybenzene A) toluene E) benzophenone B) p-xylene C) anisole 22. Which of the following compounds will react least rapidly when treated with CH3 CH2Cl and AlCl3? D) benzene A) o-xylene E) bromobenzene B) acetanilide 23. Rank the following compounds in order of increasing reactivity towards chlorination with C12/AICI3 (slowest reacting to fastest). D) 2 4 5 1 3 A) 3 4 2 1

Explanation / Answer

19.

-COOH group is ring deactivation group and it directs the electrophile to attack at meta position

20.

-CN group is electron withdrawing group and it is a ring deactivation group and it directs the electrophile to attack at meta position

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