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CR 8 Reactions of Conjugated Dienes and DielsAlder Reaction
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Join my ochem office hours and hang out with me!: https://www.skool.com/bryantochem-inn... • 1. Introduction - 0:00 • The session starts with a greeting to participants and a brief overview of the session's topics. • 2. Conjugated Dienes - 0:46 • Discusses the structure and properties of conjugated dienes, highlighting their unique chemical behavior. • 3. Thermodynamic Product vs. Kinetic Product - 3:41 • Explains the difference between thermodynamic and kinetic products, focusing on conditions that favor each. • 4. Addition of DCl to Symmetrical Conjugated Diene - 4:56 • Demonstrates the addition of DCl to a symmetrical conjugated diene and discusses the outcomes and selectivity. • 5. Addition of HCl to Asymmetrical Conjugated Diene - 14:51 • Covers the regioselectivity and stereoselectivity of HCl addition to an asymmetrical conjugated diene. • 6. Addition of Cl2 to Asymmetrical Conjugated Diene - 22:09 • Analyzes the reaction mechanism and product distribution when Cl2 is added to an asymmetrical conjugated diene. • 7. Addition of Br2 to Symmetrical Conjugated Diene - 34:10 • Explores the bromination of symmetrical conjugated dienes and the resulting di-brominated products. • 8. Kahoot Practice Problems on Chapters 11, 12, 13, and 14 - 43:19 • Engages with a live Kahoot quiz to reinforce learning on topics covered in previous chapters. • 9. E2 Reaction to Prepare Alkenes - 44:24 • Describes how to use the E2 elimination reaction to synthesize alkenes, emphasizing the mechanism and stereochemistry. • 10. Dissolving Metal Reduction of Alkyne Followed By Dihydroxylation - 47:38 • Shows a two-step synthetic route involving the dissolving metal reduction of alkynes followed by dihydroxylation. • 11. Dissolving Metal Reduction of Alkynes - 50:56 • This section covers the powerful chemical reduction of alkynes using dissolving metals, resulting in the formation of trans alkenes. • 12. Radical Addition of HBr to Alkyne, then Grignard Reagent Preparation followed by SN2 Reaction - 54:58 • Radical addition of hydrogen bromide to alkynes, followed by the preparation of Grignard reagents and their subsequent use in an SN2 reaction. • 13. Dehydration of Alcohols with a Methyl Shift - 1:00:40 • This segment explores the dehydration process of alcohols, specifically focusing on a fascinating phenomenon known as the methyl shift during the reaction. • 14. Mercuric-Ion Catalyzed Hydration of Alkynes - 1:02:55 • This section demonstrates the addition of water across alkynes using mercuric ions as catalysts, resulting in the formation of ketones or aldehydes. • 15. Halogenation (Addition of X2) of Alkynes - 1:07:17 • In this part, you’ll explore the halogenation of alkynes, specifically the addition of halogens (such as chlorine or bromine) across the triple bond, yielding vicinal dihalides. • 16. Hydrogenation in Pd-C Catalyst of Alkynes - 1:09:29 • This segment covers the reduction of alkynes to alkanes using a palladium-carbon (Pd-C) catalyst and hydrogen gas, which forms alkanes. • 17. Epoxide Formation via Peroxy Acid Followed by Epoxide Opening in Basic Conditions - 1:12:09 • Here, you’ll learn about the synthesis of epoxides using peroxy acids and their ring-opening under basic conditions. • 18. E2 Problem Emphasizing the Anti-Periplanar Transition State - 1:15:29 • This section emphasizes the E2 elimination reaction, focusing on the anti-periplanar arrangement of leaving groups and hydrogen atoms during the transition state. • 19. H2 Lindlar's Catalyst on Alkynes - 1:20:52 • Discusses the selective hydrogenation of alkynes to form cis-alkenes using Lindlar’s catalyst, which prevents further reduction to alkanes. • 20. Hydroboration-Oxidation of Alkynes - 1:22:42 • Explores the addition of boron and subsequent oxidation of alkynes, resulting in the formation of anti-Markovnikov alkenes with syn stereochemistry. • 21. Which reaction forms both syn and anti products? - 1:26:56 • 22. Which of the following gives a Markovnikov product? - 1:29:37 • 23. Which of the following mechanisms involves a tautomerization? - 1:30:42 • 24. Diels-Alder - 1:32:16 • Introduces the Diels-Alder cycloaddition, a powerful synthetic method for constructing cyclic compounds by combining dienes and dienophiles. • 25. Electron-Donating Group (EDG) vs. Electron-Withdrawing Group (EWG) - 1:37:43 • Compares the effects of substituents on π-systems, specifically electron-donating and electron-withdrawing groups, influencing reactivity. • 26. Regiochemistry of Diels-Alder Reaction - 1:47:40 • Explores the regioselectivity in Diels-Alder reactions, determining which carbon atoms in the diene and dienophile react to form the new ring. • 27. Stereochemistry of Diels-Alder Reaction - 1:53:33 • Discusses the stereochemical outcomes in Diels-Alder reactions, emphasizing the relative orientation of substituents in the product. • 28. Tricky Exam Formatted Diels-Alder Predict the Product Problem - 1:57:50 • Presents a tricky Diels-Alder problem, emphasizing regiochemistry and stereochem.
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