The enamines formed when 2-methylcyclohexanone is treated with ( CH 3 ) 2 NH are to be predicted. Concept introduction: Aldehyde or ketone on reaction with secondary amine forms enamine. The nucleophilic attack of secondary amine on carbonyl carbon results in the formation of intermediate carbinolamine. This intermediate loses water to form an enamine. In this case the elimination occurs across two adjacent carbon atoms to form new carbon-carbon double bond.

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Question Suggest a mechanism for the following reactions. Each will require multiple types of concerted pericyclic reactions (cycloaddition, electrocyclic, and sigmatropic. Classify each reaction type. CN a. NC 180 °C

Answer 1

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 18.11, Problem 22P

Interpretation Introduction

Interpretation: The enamines formed when 2-methylcyclohexanone is treated with (CH3)2NH are to be predicted.

Concept introduction: Aldehyde or ketone on reaction with secondary amine forms enamine. The nucleophilic attack of secondary amine on carbonyl carbon results in the formation of intermediate carbinolamine. This intermediate loses water to form an enamine. In this case the elimination occurs across two adjacent carbon atoms to form new carbon-carbon double bond.

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Question Suggest a mechanism for the following reactions. Each will require multiple types of concerted pericyclic reactions (cycloaddition, electrocyclic, and sigmatropic. Classify each reaction type. CN a. NC 180 °C

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Q2: Ranking Acidity a) Rank the labeled protons in the following molecule in order of increasing pKa. Briefly explain the ranking. Use Table 2.2 as reference. Ha Нь HC H-N Ha OHe b) Atenolol is a drug used to treat high blood pressure. Which of the indicated N-H bonds is more acidic? Explain. (Hint: use resonance structures to help) Name the functional groups on atenolol. H H-N atenolol Ν H-N OH Н

Answer 2

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 18.11, Problem 22P

Interpretation Introduction

Interpretation: The enamines formed when 2-methylcyclohexanone is treated with (CH3)2NH are to be predicted.

Concept introduction: Aldehyde or ketone on reaction with secondary amine forms enamine. The nucleophilic attack of secondary amine on carbonyl carbon results in the formation of intermediate carbinolamine. This intermediate loses water to form an enamine. In this case the elimination occurs across two adjacent carbon atoms to form new carbon-carbon double bond.

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Answer 3

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 18.11, Problem 22P

Interpretation Introduction

Interpretation: The enamines formed when 2-methylcyclohexanone is treated with (CH3)2NH are to be predicted.

Concept introduction: Aldehyde or ketone on reaction with secondary amine forms enamine. The nucleophilic attack of secondary amine on carbonyl carbon results in the formation of intermediate carbinolamine. This intermediate loses water to form an enamine. In this case the elimination occurs across two adjacent carbon atoms to form new carbon-carbon double bond.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 18.11, Problem 22P

Interpretation Introduction