Which of the Following Substituents Will Not Direct the Incoming

question 79

Multiple Choice

Which of the following substituents will not direct the incoming group to the ortho/para position during electrophilic aromatic substitution?

• A) -CH₂CH₃
• B) -CF₃
• C) -OCH₃
• D) -NHCH₃
• E) -Br

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Definitions:

Zygomatic Bone

One of the bones that form the prominence of the cheek and part of the lateral wall and floor of the orbit.

Vertebra

The individual bones that make up the vertebral column (spine), providing structural support and protecting the spinal cord.

Mandible

The lower jawbone, which is the largest and strongest bone of the face, involved in chewing and forming the mouth's lower boundary.