Book cover for Organic Chemistry

Organic Chemistry

John McMurry

ISBN #9781305080485

9th Edition

1,986 Questions

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Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

Chapter 5 on stereochemistry at tetrahedral centers covers the fundamental concepts of chirality, explaining that molecules with non-superimposable mirror images (chiral molecules) often arise from tetrahedral carbons bonded to four different groups. The text details how to use the Cahn–Ingold–Prelog rules for assigning R and S configurations, distinguishes among enantiomers, diastereomers, meso compounds, and prochiral molecules, and emphasizes the critical role of chirality in optical activity, biochemical interactions, and pharmaceutical effectiveness. Understanding these topics is essential for advanced studies in organic and biological chemistry.

Learning Objectives

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Key Concepts

CONCEPT

DEFINITION

Acid–Base Chemistry

The study of acids and bases using both the Brønsted–Lowry (proton-donating/accepting) and Lewis (electron pair accepting/donating) frameworks, including quantification via pKa values, which together explain chemical reactivity in organic molecules. •

Example Problems

Example 1

Which of the following objects are chiral? (a) Soda can (b) Screwdriver (c) Screw (d) Shoe

Example 2

Which of the following molecules are chiral? Identify the chirality center(s) in each.

Example 3

Alanine, an amino acid found in proteins, is chiral. Draw the two enantiomers of alanine using the standard convention of solid, wedged, and dashed lines.

Example 4

Identify the chirality centers in the following molecules (green $=\mathrm{Cl}$, yellowgreen $=\mathrm{F}$ ): a. Threose (a sugar) b. Enflurane (an anesthetic)

Example 5

Is cocaine (Worked Example 5-2) dextrorotatory or levorotatory?

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Step-by-Step Explanations

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Common Mistakes

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