question_answer

Which of the following statements are correct with respect to the effect of trifluoromethyl group\[(-C{{F}_{3}}),\]on an electrophilic aromatic substitution?

A)  The \[\text{C}{{\text{F}}_{\text{3}}}\]group will deactivate the ring

B)  The\[\text{C}{{\text{F}}_{\text{3}}}\] group will activate the ring

C)  The \[\text{C}{{\text{F}}_{\text{3}}}\]group will be ortho, para director

D)  The \[\text{C}{{\text{F}}_{\text{3}}}\]group will be a meta director

Correct Answer: A

Solution :

 Trifluoromethyl group \[(-C{{F}_{3}})\] is m-directing group and it will deactivate the ring.