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Chapter 4: Q-89P (page 184)

Question:What is the configuration of the asymmetric centers in the following compounds?

Short Answer

Expert verified
  1. The configuration of the centre is R.

Step by step solution

01

Definition of asymmetric centre

Asymmetric centres are those which has 4 different groups attached to them, that is,the chiral centres are called asymmetric centre.

02

determination of R, S nomenclature

  1. The naming should be done according to the priority series.
  2. If lowest group is in below the plane, the name of the chiral centre will be according to the direction of rotation.
  3. If lowest group is in above the plane, the name of the chiral centre will be reversed to the direction of rotation.
  4. Double bond will an atom has more priority than single bond.
03

explanation

asymmetric center must have four different groups attached to it, and only sp3 carbons

can be asymmetric centers. Therefore, we start by locating all the sp3 carbons in the following structures and name them according to rules,

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Most popular questions from this chapter

Assign relative priorities to each set of substituents:

a. -CH2CH2CH3 -CH(CH3)2 -CH=CH2 -CH3

b. -CH2NH2 -NH2 -OH -CH2OH

c. -C(=O)CH3 -CH=CH2 -Cl -C≡N

Which of the compounds in Problem 14 can exist as enantiomers?

Question:Indicate whether each of the following structures is (R)-2-chlorobutane or (S)-2-chlorobutane

Draw skeletal structures for the compounds in Problem 3, including any cis-trans isomers.

Limonene exists as two different stereoisomers. The R enantiomer is found in oranges and lemons, and the S enantiomer is found in spruce trees. Which of the following is found in oranges and lemons?
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