The precursor needed for the reaction corresponding to the transform shown is to be drawn with appropriate stereochemical configuration. Concept introduction: An S N 2 reaction is a single-step reaction. The nucleophile attacks the electron-poor carbon in the substrate and displaces the leaving group. Since the nucleophile starts to form a bond with the carbon before the leaving group has broken off, it must attack from a direction opposite to that of the leaving group. This requirement makes an S N 2 reaction stereospecific, with an inversion of the configuration at the reaction center.

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Chapter 13, Problem 13.16P

Interpretation Introduction

Interpretation:

The precursor needed for the reaction corresponding to the transform shown is to be drawn with appropriate stereochemical configuration.

Concept introduction:

An SN2 reaction is a single-step reaction. The nucleophile attacks the electron-poor carbon in the substrate and displaces the leaving group. Since the nucleophile starts to form a bond with the carbon before the leaving group has broken off, it must attack from a direction opposite to that of the leaving group. This requirement makes an SN2 reaction stereospecific, with an inversion of the configuration at the reaction center.

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