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Ch.21 - Organic Chemistry
Chapter 21, Problem 67a,c

Draw the structure for each compound. a. isopropylbenzene c. 1-chloro-4-methylbenzene

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1
Step 1: Understand the structure of benzene, which is a six-carbon ring with alternating double bonds, often represented as a hexagon with a circle inside to denote resonance.
Step 2: For isopropylbenzene, identify the isopropyl group, which is a three-carbon group (CH(CH3)2) attached to the benzene ring. The isopropyl group is attached to one of the carbon atoms of the benzene ring.
Step 3: Draw the benzene ring and attach the isopropyl group to one of the carbon atoms on the ring. Ensure the isopropyl group is correctly oriented with the central carbon attached to the benzene and the two methyl groups branching off.
Step 4: For 1-chloro-4-methylbenzene, identify the substituents: a chlorine atom and a methyl group. The '1' and '4' indicate the positions on the benzene ring where these groups are attached, with '1' being the starting point and '4' being the opposite side of the ring.
Step 5: Draw the benzene ring, then attach the chlorine atom to the first carbon and the methyl group to the fourth carbon, ensuring the correct positions relative to each other on the benzene ring.

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