This is the second quarter of the organic chemistry series. Topics covered include: Fundamental concepts relating to carbon compounds with emphasis on structural theory and the nature of chemical bonding, stereochemistry, reaction mechanisms, and spectroscopic, physical, and chemical properties of the principal classes of carbon compounds. This video is part of a 26-lecture undergraduate-level course titled "Organic Chemistry" taught at UC Irvine by Professor David Van Vranken. Index of Topics: 00:36- Natural Does Not Mean Safe 01:43- Molecular structure of allantoin CHAPTER 18-Electrophilic Aromatic Substitution=E.A.S. 04:00- Chapter 18 Introduction 08:51- 18.1: Five Important Electrophilic Aromatic Substitution Reactions 14:39- 18.2: Two-Step Mechanism for E.A.S. 22:33- 18.3: Dalogenation with FeX3 and X2 31:05- 18.4: Nitration with HNO3 and H2S04 39:48- 18.4: Sulfation with SO3 and H2SO4 45:56- 18.5: Friedel-Crafts Acylation with RCOCl and AlCl3