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Chapter 4: Q.42. (page 128)

Question: Give the IUPAC name for each compound.

Short Answer

Expert verified

Answer

  1. 4-isopropylheptane
  2. 3-ethyl-3-methylpentane
  3. 4,4-diethyl-5-methyloctane

Step by step solution

01

Newman projection

The two bonded carbons show a Newman projection with their groups.

02

IUPAC names

a. The given Newman structure has two bonded carbon atoms. The first priority is given to that carbon where the tri substitution of the carbon is located. Therefore, the correct name and structure are shown as:


4-isopropylheptane

b. The given Newman structure has two bonded carbon atoms. The first priority is given to that carbon where the tri substitution of the carbon is located. Therefore, the correct name and structure are shown as:

3-ethyl-3-methylpentane

c. The given Newman structure has two bonded carbon atoms. The first priority is given to that carbon where the bulky substituents are located. Therefore, the correct name and structure are shown as:

4,4-diethyl-5-methyloctane

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Most popular questions from this chapter

Question: a. Which compounds (B鈥揊) are identical to A? b. Which compounds (B鈥揊) represent an isomer of A?

Question: The eclipsed conformation of CH3CH2Cl is role="math" localid="1648620042367" 15kJ/mol less stable than the staggered conformation. How much is the H, Cl eclipsing interaction worth in destabilization?

Question: For each compound drawn below:

a. Draw representations for the cis and trans isomers using a hexagon for the six membered ring, and wedges and dashed wedges for substituents.

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c. Draw the two possible chair conformations for the trans isomer. Which conformation, if either, is more stable?

d. Which isomer, cis or trans, is more stable and why?

Question: Cyclopropane and cyclobutane have similar strain energy despite the fact that the C-C-C bond angles of cyclopropane are much smaller than those of cyclobutane. Suggest an explanation for this observation, considering all sources of strain discussed in Chapter 4.

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