Chapter 5, Problem 38P

Interpretation Introduction

Interpretation:The chiral molecule should be circled and chiral center should be marked with asterisk along with R and S designation.

  

Concept introduction:Chiral carbon is any stereocenter attached to four different alkyl substituents. It is also known as stereocenter. If any two of the substituent happen to be similar the center is regarded as achiral. However, the most essential criteria that help to distinguish a chiral or non-chiral system ispresence of any symmetry element.

In order to assign absolute configuration of R and S, Cahn − Ingold − Prelog rules are used and the first step is to assign the priority order on the basis of atomic number. The one with highest atomic number gest highest priority and is designated as 1 and so on and with the lowest priority group at the bottom.

If the groups now are arranged are read from highest towards least in clockwise fashion then R is assigned to the stereocenter if the rotation is anticlockwise then S is assigned at the configuration.