Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given. Concept Introduction: Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid. Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows, Step 1: Add proton (protonation of Pinacol using acid catalyst). Step 2: Break a bond to give a stable molecules or ions (formation of carbocation). Step 3: 1, 2-shift (migration of substituent from α- to β- carbon). Step 4: deprotonation occurs (take a proton away).

Question

Lab Data The distance entered is out of the expected range. Check your calculations and conversion factors. Verify your distance. Will the gas cloud be closer to the cotton ball with HCI or NH3? Did you report your data to the correct number of significant figures? - X Experimental Set-up HCI-NH3 NH3-HCI Longer Tube Time elapsed (min) 5 (exact) 5 (exact) Distance between cotton balls (cm) 24.30 24.40 Distance to cloud (cm) 9.70 14.16 Distance traveled by HCI (cm) 9.70 9.80 Distance traveled by NH3 (cm) 14.60 14.50 Diffusion rate of HCI (cm/hr) 116 118 Diffusion rate of NH3 (cm/hr) 175.2 175.2 How to measure distance and calculate rate

Answer 1

Question

Chapter 23, Problem 23.37P

(a)

Interpretation Introduction

Interpretation:

Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

Reason for the expansion of ring in the deamination of β- aminoalcohol using nitrous acid not in Pinacol rearrangement has to be explained.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

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Lab Data The distance entered is out of the expected range. Check your calculations and conversion factors. Verify your distance. Will the gas cloud be closer to the cotton ball with HCI or NH3? Did you report your data to the correct number of significant figures? - X Experimental Set-up HCI-NH3 NH3-HCI Longer Tube Time elapsed (min) 5 (exact) 5 (exact) Distance between cotton balls (cm) 24.30 24.40 Distance to cloud (cm) 9.70 14.16 Distance traveled by HCI (cm) 9.70 9.80 Distance traveled by NH3 (cm) 14.60 14.50 Diffusion rate of HCI (cm/hr) 116 118 Diffusion rate of NH3 (cm/hr) 175.2 175.2 How to measure distance and calculate rate

For the titration of a divalent metal ion (M2+) with EDTA, the stoichiometry of the reaction is typically: 1:1 (one mole of EDTA per mole of metal ion) 2:1 (two moles of EDTA per mole of metal ion) 1:2 (one mole of EDTA per two moles of metal ion) None of the above

Please help me solve this reaction.

Answer 2

Question

Chapter 23, Problem 23.37P

(a)

Interpretation Introduction

Interpretation:

Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

Reason for the expansion of ring in the deamination of β- aminoalcohol using nitrous acid not in Pinacol rearrangement has to be explained.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

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Answer 3

Question

Chapter 23, Problem 23.37P

(a)

Interpretation Introduction

Interpretation:

Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

Reason for the expansion of ring in the deamination of β- aminoalcohol using nitrous acid not in Pinacol rearrangement has to be explained.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

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Answer 4

Question

Chapter 23, Problem 23.37P

(a)

Interpretation Introduction

Interpretation:

Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

Reason for the expansion of ring in the deamination of β- aminoalcohol using nitrous acid not in Pinacol rearrangement has to be explained.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

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Answer 5

Chapter 23, Problem 23.37P

(a)

Interpretation Introduction

Interpretation:

Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

Reason for the expansion of ring in the deamination of β- aminoalcohol using nitrous acid not in Pinacol rearrangement has to be explained.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

(b)

Interpretation Introduction

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Answer 6

Chapter 23, Problem 23.37P

(a)

Interpretation Introduction

Interpretation:

Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

Answer 7

Chapter 23, Problem 23.37P

(a)

Interpretation Introduction

Interpretation:

Similarities between the mechanism of deamination of β- aminoalcohol using nitrous acid and Pinacol rearrangement has to be given.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

Answer 8

(b)

Interpretation Introduction

Interpretation:

Reason for the expansion of ring in the deamination of β- aminoalcohol using nitrous acid not in Pinacol rearrangement has to be explained.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

Answer 9

(b)

Interpretation Introduction

Interpretation:

Reason for the expansion of ring in the deamination of β- aminoalcohol using nitrous acid not in Pinacol rearrangement has to be explained.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Pinacol rearrangement: For all glycols Pinacol rearrangement occurs. Unsymmetrical vicinal diols reveal that –OH group that becomes protonated and leaves in the one that gives rise to more stable carbocation. Acid-catalyzed conversion of Pinacol to pinacolone followed by four step mechanism as follows,

Step 1: Add proton (protonation of Pinacol using acid catalyst).

Step 2: Break a bond to give a stable molecules or ions (formation of carbocation).

Step 3: 1, 2-shift (migration of substituent from α- to β- carbon).

Step 4: deprotonation occurs (take a proton away).

Answer 10

(b)

Interpretation Introduction

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Answer 11

(b)

Interpretation Introduction

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Answer 12

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Answer 23

Ch. 23.1 - Prob. 23.1P Ch. 23.2 - Prob. 23.2P Ch. 23.2 - Prob. 23.3P Ch. 23.2 - Prob. 23.4P Ch. 23.5 - Prob. 23.5P Ch. 23.5 - Prob. AQ Ch. 23.5 - What is the hybridization of the nitrogen in...Ch. 23.5 - Prob. CQ Ch. 23.5 - The pKas of the conjugate acids of aniline and...Ch. 23.5 - Prob. EQ

Interpretation: β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested. Concept Introduction: Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.

Chapter 23 Solutions

Interpretation:

β- Aminoalcohol that gives cyclohexanecarbaldehyde has to be suggested.

Concept Introduction:

Tiffeneau–Demjanov reaction: It is an organic reaction where 1-aminomethyl-cycloalkanol gets converted to an enlarged cycloketone by reacting with nitrous acid.