Chapter 21: Ten (Or So) Great Organic Chemists

August Kekulé established that carbon atoms form four bonds and proposed the cyclic structure of benzene, providing essential frameworks for understanding molecular architecture. Friedrich Wöhler's synthesis of urea from inorganic precursors demolished the vitalist theory that separated organic from inorganic chemistry, opening the field to mechanistic investigation. Louis Pasteur discovered molecular chirality and demonstrated that handedness in molecules correlates with their optical properties, establishing stereochemistry as central to organic chemistry. Archibald Scott Couper developed early theories of carbon bonding and molecular connectivity but faced institutional suppression that delayed recognition of his contributions. Johan Josef Loschmidt created remarkably accurate structural drawings that anticipated modern bonding theory. Emil Fischer advanced understanding of carbohydrate structure and nucleotide composition, introducing the Fischer projection as a standard notation for stereochemistry. Percy Julian synthesized steroid compounds with pharmaceutical applications while breaking significant racial barriers within the scientific community. Robert Burns Woodward became legendary for executing complex total syntheses of natural products and formulating the Woodward-Hoffmann rules governing organic reactions. Linus Pauling applied quantum mechanical principles to explain chemical bonding and became the sole recipient of two unshared Nobel Prizes. Dorothy Hodgkin employed X-ray crystallography to determine molecular structures with unprecedented precision, earning recognition as a pioneer in structural chemistry. John Pople democratized computational chemistry by developing the Gaussian software suite, making quantum calculations accessible to the broader chemical community. Together, these figures reveal how organic chemistry evolved from empirical observations into a rigorous discipline grounded in atomic theory, molecular structure, and quantum mechanics.