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Exam 26: The Chemistry of the Aromatic Heterocycles and Nucleic Acids

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Exam 1: Chemical Bonding and Chemical Structure26 Questionsadd course
Exam 2: Alkanes and Organic Nomenclature25 Questionsadd course
Exam 3: The Curved-Arrow Notation, Resonance, Acids and Bases, and Chemical Equilibrium25 Questionsadd course
Exam 4: Introduction to Alkenes and Alkynes26 Questionsadd course
Exam 5: Addition Reactions of Alkenes and Alkynes25 Questionsadd course
Exam 6: Principles of Stereochemistry25 Questionsadd course
Exam 7: Cyclic Compounds and Reaction Stereochemistry25 Questionsadd course
Exam 8: Nomenclature and Noncovalent Intermolecular Interactions25 Questionsadd course
Exam 9: The Chemistry of Alkyl Halides25 Questionsadd course
Exam 10: Free-Radical Reactions, Main-Group Organometallic Compounds, and Carbenes25 Questionsadd course
Exam 11: The Chemistry of Alcohols and Thiols25 Questionsadd course
Exam 12: The Chemistry of Ethers, Epoxides, Glycols, and Sulfides25 Questionsadd course
Exam 13: Introduction to Spectroscopy25 Questionsadd course
Exam 14: Nuclear Magnetic Resonance Spectroscopy27 Questionsadd course
Exam 15: Dienes and Aromaticity25 Questionsadd course
Exam 16: The Chemistry of Benzene and Its Derivatives24 Questionsadd course
Exam 17: Allylic and Benzylic Reactivity25 Questionsadd course
Exam 18: The Chemistry of Aryl Halides, Vinylic Halides, and Phenols25 Questionsadd course
Exam 19: The Chemistry of Aldehydes and Ketones25 Questionsadd course
Exam 20: The Chemistry of Carboxylic Acids25 Questionsadd course
Exam 21: The Chemistry of Carboxylic Acid Derivatives25 Questionsadd course
Exam 22: The Chemistry of Enolate Ions, Enols, and Α,β-Unsaturated Carbonyl Compounds25 Questionsadd course
Exam 23: The Chemistry of Amines25 Questionsadd course
Exam 24: Carbohydrates25 Questionsadd course
Exam 25: The Chemistry of Thioesters, Phosphate Esters, and Phosphate Anhydrides25 Questionsadd course
Exam 26: The Chemistry of the Aromatic Heterocycles and Nucleic Acids25 Questionsadd course
Exam 27: Amino Acids, Peptides, and Proteins25 Questionsadd course
Exam 28: Pericyclic Reactions25 Questionsadd course
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Give the complementary sequence to the DNA strand. 5ʹ-ACTGAC-3ʹ

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Question 21

Predict the major organic product for this synthetic sequence. Predict the major organic product for this synthetic sequence.

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Question 22

The nitrogen mustard mustine is toxic to cells because it reacts with two DNA bases on opposite strands of the double helix. Representing the two reacting bases of DNA as R3N: and Rʹ3N: show the products of the reaction of mustine with DNA in a manner that would crosslink the two DNA strands. Your mechanism should account for the very high reactivity of mustine. Show all charges and unshared pairs. The nitrogen mustard mustine is toxic to cells because it reacts with two DNA bases on opposite strands of the double helix. Representing the two reacting bases of DNA as R<sub>3</sub>N: and Rʹ<sub>3</sub>N: show the products of the reaction of mustine with DNA in a manner that would crosslink the two DNA strands. Your mechanism should account for the very high reactivity of mustine. Show all charges and unshared pairs.

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Question 23

Outline a synthesis for the transformation: Outline a synthesis for the transformation:

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Question 24

Omeprazole is a drug used for the treatment of acid-reflux disease. The structure is shown below. Highlight the aromatic heterocycles in the structure and name the heterocycles. Omeprazole is a drug used for the treatment of acid-reflux disease. The structure is shown below. Highlight the aromatic heterocycles in the structure and name the heterocycles.

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