Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

7. Substitution Reactions

SN2 Reaction

Organic Chemistry

7. Substitution Reactions

SN2 Reaction

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Multiple Choice

Choose the S_N2 reaction that will occur the fastest.

The figure illustrates a reaction in which the product has to be determined. The reaction contains two reactants. The first reactant has the following structure: A 3-carbon alkane chain is depicted as a line structure using 2 zigzag lines. C 2 is single bonded to C H 3 on the lower left in the form of a line and single bonded to C l on the lower right.The second reactant has the following structure: A 2-carbon alkane chain is depicted as a line structure using 1 line. C 2 is single bonded to O superscript minus on the lower right. D M S O is written under the reaction arrow.

The figure illustrates a reaction in which the product has to be determined. The reaction contains two reactants. The first reactant is C H 3 I. The second reactant has the following structure: A 3-carbon alkane chain is depicted as a line structure using 2 zigzag lines. C 2 is single bonded to C H 3 on the lower left in the form of a line and single bonded to O H on the lower right.

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Verified step by step guidance

Identify the type of reaction: SN2 reactions involve a nucleophile attacking an electrophile, leading to the displacement of a leaving group.

Consider the structure of the electrophile: SN2 reactions are fastest with primary carbons due to less steric hindrance. Analyze each provided reaction for the degree of the carbon attached to the leaving group.

Evaluate the leaving group: A good leaving group is essential for a fast SN2 reaction. Compare the leaving groups in each reaction (e.g., Cl, Br, I) and note that iodide (I) is generally a better leaving group than bromide (Br) or chloride (Cl).

Assess the nucleophile: A strong nucleophile is necessary for a fast SN2 reaction. Consider the nucleophilicity of each reactant, noting that negatively charged species are typically stronger nucleophiles.

Analyze the solvent: SN2 reactions are favored in polar aprotic solvents. Check the solvent used in each reaction (e.g., DMSO, THF) to determine which reaction conditions are most favorable for an SN2 mechanism.