Questions: Draw skeletal structures corresponding to each of the following IUPAC names: a. cis-1,2-diethylcycloheptane b. 6-isobutyldodecane c. 2-ethyl-1,1-dimethylcyclopropane d. 2,3,3,4-tetramethylpentane

Draw skeletal structures corresponding to each of the following IUPAC names: a. cis-1,2-diethylcycloheptane b. 6-isobutyldodecane c. 2-ethyl-1,1-dimethylcyclopropane d. 2,3,3,4-tetramethylpentane
Transcript text: Draw skeletal structures corresponding to each of the following IUPAC names: a. cis-1,2-diethylcycloheptane b. 6-isobutyldodecane c. 2-ethyl-1,1-dimethylcyclopropane d. 2,3,3,4-tetramethylpentane
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Solution

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Solution Steps

Step 1: Understanding Skeletal Structures

Skeletal structures are simplified organic chemistry representations where carbon atoms are represented by the ends and intersections of lines, and hydrogen atoms attached to carbons are not shown. Each line represents a bond between carbon atoms, and any other atoms or groups are explicitly drawn.

Step 2: Drawing cis-1,2-diethylcycloheptane
  • Structure: Start with a cycloheptane ring, which is a seven-membered carbon ring.
  • Substituents: Add ethyl groups (–CH₂CH₃) at the 1 and 2 positions. Since it is "cis," both ethyl groups should be on the same side of the ring.
Step 3: Drawing 6-isobutyldodecane
  • Structure: Begin with a dodecane chain, which is a straight chain of 12 carbon atoms.
  • Substituents: Attach an isobutyl group (–CH(CH₃)₂) at the 6th carbon of the chain.
Step 4: Drawing 2-ethyl-1,1-dimethylcyclopropane
  • Structure: Start with a cyclopropane ring, which is a three-membered carbon ring.
  • Substituents: Add two methyl groups (–CH₃) at the 1 position and an ethyl group (–CH₂CH₃) at the 2 position.
Step 5: Drawing 2,3,3,4-tetramethylpentane
  • Structure: Begin with a pentane chain, which is a straight chain of 5 carbon atoms.
  • Substituents: Add methyl groups (–CH₃) at the 2, 3, 3, and 4 positions.

Final Answer

  • a. cis-1,2-diethylcycloheptane: \(\boxed{\text{Skeletal structure with a seven-membered ring and two ethyl groups on the same side at positions 1 and 2}}\)
  • b. 6-isobutyldodecane: \(\boxed{\text{Skeletal structure with a 12-carbon chain and an isobutyl group at position 6}}\)
  • c. 2-ethyl-1,1-dimethylcyclopropane: \(\boxed{\text{Skeletal structure with a three-membered ring, two methyl groups at position 1, and an ethyl group at position 2}}\)
  • d. 2,3,3,4-tetramethylpentane: \(\boxed{\text{Skeletal structure with a five-carbon chain and methyl groups at positions 2, 3, 3, and 4}}\)
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