Peptides may be synthesized using an α-keto acid and a hydroxylamine. Concept introduction: The reaction of formation of an amide/ peptide from an α-keto acid and a hydroxylamine involves an initial nucleophilic substitution of the alkyl group to the keto group followed by decarboxylation and elimination of water molecule. To determine: Mechanism of reaction thought to occur by nucleophilic addition of the N-alkylhydroxylamine to the keto acid as if forming an oxime.

Question

4. Predict the major product(s) for each of the following reactions. HBr (1 equiv.) peroxide, A a. b. NBS, peroxide, A

Answer 1

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 26.SE, Problem 28MP

Interpretation Introduction

Interpretation:

Peptides may be synthesized using an α-keto acid and a hydroxylamine.

Concept introduction:

The reaction of formation of an amide/ peptide from an α-keto acid and a hydroxylamine involves an initial nucleophilic substitution of the alkyl group to the keto group followed by decarboxylation and elimination of water molecule.

To determine:

Mechanism of reaction thought to occur by nucleophilic addition of the N-alkylhydroxylamine to the keto acid as if forming an oxime.

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4. Predict the major product(s) for each of the following reactions. HBr (1 equiv.) peroxide, A a. b. NBS, peroxide, A

In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used separation techniques. Some of these techniques are:Distillation – this process is used to separate components that have significantly different boiling points. The solution is heated and the lower boiling point substance is vaporized first. The vapor can be collected and condensed and the component recovered as a pure liquid. If the temperature of the mixture is then raised, the next higher boiling component will come off and be collected. Eventually only non-volatile components will be left in the original solution.Centrifugation – a centrifuge will separate mixtures based on their mass. The mixture is placed in a centrifuge tube which is then spun at a high speed. Heavier components will settle at the bottom of the tube while lighter components will be at the top. This is the technique used to separate red blood cells from blood plasma.Sieving – this is…

Briefly describe a eutectic system.

Answer 2

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 26.SE, Problem 28MP

Interpretation Introduction

Interpretation:

Peptides may be synthesized using an α-keto acid and a hydroxylamine.

Concept introduction:

The reaction of formation of an amide/ peptide from an α-keto acid and a hydroxylamine involves an initial nucleophilic substitution of the alkyl group to the keto group followed by decarboxylation and elimination of water molecule.

To determine:

Mechanism of reaction thought to occur by nucleophilic addition of the N-alkylhydroxylamine to the keto acid as if forming an oxime.

Expert Solution & Answer

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Check out sample textbook solution

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 26.SE, Problem 28MP

Interpretation Introduction

Interpretation:

Peptides may be synthesized using an α-keto acid and a hydroxylamine.

Concept introduction:

The reaction of formation of an amide/ peptide from an α-keto acid and a hydroxylamine involves an initial nucleophilic substitution of the alkyl group to the keto group followed by decarboxylation and elimination of water molecule.

To determine:

Mechanism of reaction thought to occur by nucleophilic addition of the N-alkylhydroxylamine to the keto acid as if forming an oxime.

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 26.SE, Problem 28MP

Interpretation Introduction