Chapter 4.7, Problem 18P

(a)

Interpretation Introduction

Interpretation:

The enantiomers of the given compounds using perspective formula has to be drawn.

Concept introduction:

Enantiomers are stereoisomers of compounds having one asymmetric center, in which these isomers are non-superimposable mirror images of each other.

Enantiomers can be drawn using perceptive formals or Fischer projections.

Perceptive formula: draw two bonds of asymmetric carbon is in plane, one bond as a solid wedge that coming out of plane and the fourth bond as hatched wedge that pointing away from the plane. T he solid wedge is always below to the hatched wedge.

Fischer projections: the asymmetric center (carbon) represents as the point of intersection of two perpendicular lines, in which the horizontal lines represent the bonds that project out of the plane of the paper and the vertical lines represent the bonds that away from the plane of the paper.

(b)

Interpretation Introduction

Interpretation:

The enantiomers of the given compounds using fisher projection  has to be drawn.

Concept introduction:

Enantiomers are stereoisomers of compounds having one asymmetric center, in which these isomers are non-superimposable mirror images of each other.

Enantiomers can be drawn using perceptive formals or Fischer projections.

Perceptive formula: draw two bonds of asymmetric carbon is in plane, one bond as a solid wedge that coming out of plane and the fourth bond as hatched wedge that pointing away from the plane.  The solid wedge is always below to the hatched wedge.

Fischer projections: the asymmetric center (carbon) represents as the point of intersection of two perpendicular lines, in which the horizontal lines represent the bonds that project out of the plane of the paper and the vertical lines represent the bonds that away from the plane of the paper.