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Chapter 3: Q.3-41P (page 122)

Convert the following Newman projections to skeletal structures and name them.

Short Answer

Expert verified
  1. 3-ethyl-pentan-2-ol

b. 2,2 dimethyl-pentanamine

Step by step solution

01

Definition of skeletal structure and the concept of IUPAC naming

Skeletal structures are only the lines where all the atoms are represented other than carbon in a ring, branch, or chain.

We canwrite the IUPACname of the compound by using the following rules andtheseare as follows.

There are some rules to be followed for the naming of a structure and these are given as follows,

  1. Finding the longest chain.
  2. Numbering the chain according to the priority order of double bond, triple bond, and functional group.

Functionalgroupsshould be written in alphabeticalorder, meaningif there is a methyl and ethyl group,put the ethylgroup at 1st as e comes earlier than m in Alphabets

02

Subpart (a) Estimation of the first skeletal structure and its naming

The step-by-step conversion from Newman projection to skeletal projection is

The name of the structure is 3-ethyl-pentan-2-ol.

03

Subpart (b) Estimation of the second skeletal structure and its naming

Here, the step-by-step conversion from Newman projection to skeletal projection is

The name of the compound is 2,2 dimethyl-pentanamine.

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Most popular questions from this chapter

a. Draw a potential energy diagram for rotation about the C-C bond of 1,2-dichloroethane through 360degree, starting with the least stable conformer. The anti-conformer is 1.2 kcal/mol more stable than a gauche conformer. A gauche conformer has two energy barriers, 5.2 kcal/mol and 9.3 kcal/mol.

b. Draw the conformer that is present in greatest concentration.

c. How much more stable is the most stable staggered conformer than the most stable eclipsed conformer?

d. How much more stable is the most stable staggered conformer than the least stable eclipsed conformer?

What is the smallest straight-chain alkane that is a liquid at room temperature (which is about 25 掳C)?

Give each substituent on the nine-carbon chain a common name and a parenthetical name.

List the following compounds from highest boiling to lowest boiling:

Give the systematic names for all alkanes with molecular formula C7H16that do not have any secondary hydrogens.
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