The stereogenic centers in the given compound are to be located. Each stereogenic center is to be labeled as R or S . Concept introduction: An atom bearing four different atoms or groups which produces stereoisomers on interchange of any two groups are stereogenic centers. The stereogenic centers with R , S configuration are assigned according to Cahn-Ingold-Prelog rules. According to these rules, the substituents attached to stereogenic centers are given priority. On moving from higher priority to lower priority substituent in clockwise direction, the compound is assigned with R configuration. On moving from higher priority to lower priority substituent in anticlockwise direction, the compound is assigned with S configuration.

Question

For the single step reaction: A + B → 2C + 25 kJ If the activation energy for this reaction is 35.8 kJ, sketch an energy vs. reaction coordinate diagram for this reaction. Be sure to label the following on your diagram: each of the axes, reactant compounds and product compounds, enthalpy of reaction, activation energy of the forward reaction with the correct value, activation energy of the backwards reaction with the correct value and the transition state. In the same sketch you drew, after the addition of a homogeneous catalyst, show how it would change the graph. Label any new line "catalyst" and label any new activation energy.

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Question

Chapter 5, Problem 5.70P

Interpretation Introduction

Interpretation: The stereogenic centers in the given compound are to be located. Each stereogenic center is to be labeled as R or S.

Concept introduction: An atom bearing four different atoms or groups which produces stereoisomers on interchange of any two groups are stereogenic centers.

The stereogenic centers with R,S configuration are assigned according to Cahn-Ingold-Prelog rules. According to these rules, the substituents attached to stereogenic centers are given priority. On moving from higher priority to lower priority substituent in clockwise direction, the compound is assigned with R configuration. On moving from higher priority to lower priority substituent in anticlockwise direction, the compound is assigned with S configuration.

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