Exam 21: Organic Synthesis 2: Intermediate Topics in Synthesis Design,and Useful Reduction and Oxidation Reactions
Exam 1: Atomic and Molecular Structure54 Questions
Exam 2: Interchapter: Nomenclature 1-477 Questions
Exam 3: Interchapter 1molecular Orbital Theory and Chemical Reactions17 Questions
Exam 4: Three-Dimensional Geometry,intermolecular Interactions,and Physical Properties53 Questions
Exam 5: Orbital Interactions 1: Hybridization and Two-Center Molecular Orbitals56 Questions
Exam 6: Isomerism 1: Conformational and Constitutional Isomers60 Questions
Exam 7: Isomerism 2: Chirality,enantiomers,and Diastereomers63 Questions
Exam 8: The Proton Transfer Reaction: an Introduction to Mechanisms,thermodynamics,and Charge Stability51 Questions
Exam 9: An Overview of the Most Common Elementary Steps58 Questions
Exam 10: An Introduction to Multistep Mechanisms: Sn1 and E1 Reactions59 Questions
Exam 11: Nucleophilic Substitution and Elimination Reactions 1: Competition Among Sn2,sn1,e2,and E1 Reactions50 Questions
Exam 12: Nucleophilic Substitution and Elimination Reactions 2: Reactions That Are Useful for Synthesis58 Questions
Exam 13: Electrophilic Addition to Nonpolar Π Bonds 1: Addition of a Brønsted Acid50 Questions
Exam 14: Electrophilic Addition to Nonpolar Π Bonds 2: Reactions Involving Cyclic Transition States55 Questions
Exam 15: Organic Synthesis 1: Beginning Concepts50 Questions
Exam 16: Orbital Interactions 2: Extended Π Systems,conjugation,and Aromaticity54 Questions
Exam 17: Structure Determination 1: Ultravioletvisible and Infrared Spectroscopies50 Questions
Exam 18: Structure Determination 2: Nuclear Magnetic Resonance Spectroscopy and Mass Spectrometry60 Questions
Exam 19: Nucleophilic Addition to Polar Π Bonds 1: Addition of Strong Nucleophiles50 Questions
Exam 20: Nucleophilic Addition to Polar Π Bonds 2: Addition of Weak Nucleophiles and Acid and Base Catalysis63 Questions
Exam 21: Organic Synthesis 2: Intermediate Topics in Synthesis Design,and Useful Reduction and Oxidation Reactions50 Questions
Exam 22: Nucleophilic Additionelimination Reactions 1: the General Mechanism Involving Strong Nucleophiles55 Questions
Exam 23: Nucleophilic Additionelimination Reactions 2: Weak Nucleophiles54 Questions
Exam 24: Electrophilic Aromatic Substitution 1: Substitution on Benzene; Useful Accompanying Reactions50 Questions
Exam 25: Electrophilic Aromatic Substitution 2: Substitution on Mono- and Disubstituted Benzene and Other Aromatic Rings50 Questions
Exam 26: The Dielsalder Reaction and Other Pericyclic Reactions53 Questions
Exam 27: Reactions Involving Free Radicals50 Questions
Exam 28: Polymers51 Questions
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Show how to convert the starting material at the left to the desired product at the right. 

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Draw a complete,detailed mechanism for the protection step shown below,and predict the product. 

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Which of the following reaction sequences could be used to synthesize the molecule shown below? 

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Fill in the reagent needed to carry out the following reaction. 

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Which of the following transformations would require the use of a protecting group? (Reagents are not shown.)
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Which of the following reagents would be the best choice to carry out the synthetic step shown below? 

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Propose a synthesis of the following molecule using reagents with five or fewer carbon atoms. 

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