Question

$CH_2 \dagger Br$

Answer 1

1-(bromomethyl)-4-isopropylbenzene

Answer 2

The given image displays a chemical structure.

1. Identify the core structure: The central part of the molecule is a six-membered ring with alternating double and single bonds, which represents a benzene ring.
2. Identify the substituents:
   • One substituent is clearly shown as $-\text{CH}_2\text{Br}$. The text "$CH_2 \dagger Br$" written above it confirms this group, with the $\dagger$ symbol interpreted as a bond.
   • The other substituent is an isopropyl group, $-\text{CH}(\text{CH}_3)_2$, which is attached to the benzene ring by its central carbon.
3. Determine the relative positions of substituents: The $-\text{CH}_2\text{Br}$ group and the isopropyl group are attached to opposite carbons of the benzene ring. This indicates a para (1,4) substitution pattern.
4. Name the compound using IUPAC rules:
   • The substituents are bromomethyl ($-\text{CH}_2\text{Br}$) and isopropyl ($-\text{CH}(\text{CH}_3)_2$).
   • According to alphabetical order, 'bromomethyl' comes before 'isopropyl'.
   • Assign the carbon bearing the bromomethyl group as position 1.
   • Since the isopropyl group is para to the bromomethyl group, it will be at position 4.
   • Therefore, the IUPAC name is 1-(bromomethyl)-4-isopropylbenzene.
   • Alternatively, using the common para prefix, the name can be p-(bromomethyl)isopropylbenzene.

The structure can be represented as:

The molecule is:

(Note: The mermaid diagram is a simplified representation and does not show the aromaticity within the ring explicitly as three double bonds, but rather as a cyclic structure with single bonds, which is a limitation of this specific diagram type for aromatic rings. The SMILES string is more accurate for detailed structure representation.)

The structure is a benzene ring with a bromomethyl group and an isopropyl group at para positions.

Solution: The chemical structure shown in the image is 1-(bromomethyl)-4-isopropylbenzene.