EBK ORGANIC CHEMISTRY-PRINT COMPANION (
EBK ORGANIC CHEMISTRY-PRINT COMPANION (
4th Edition
ISBN: 9781119776741
Author: Klein
Publisher: WILEY CONS
Question
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Chapter 25.3, Problem 12CC

(a)

Interpretation Introduction

Interpretation:

The reagents for making the given amino acids using Hell-Volhard-Zelinsky reaction need to be identified.

Concept introduction:

α -bromination of carboxylic acid in presence of bromine and a catalytic amount of phosphorous tribromide to form α -bromocarboxylic acid is known as Hell-Volhard-Zelinsky reaction.  The formed α -bromocarboxylic acid when treated with ammonia gives α -aminocarboxylic acid as the product.

EBK ORGANIC CHEMISTRY-PRINT COMPANION (, Chapter 25.3, Problem 12CC , additional homework tip  1

To identify: the reagents used for synthesis of leucine using Hell-Volhard-Zelinsky reaction.

EBK ORGANIC CHEMISTRY-PRINT COMPANION (, Chapter 25.3, Problem 12CC , additional homework tip  2

(b)

Interpretation Introduction

Interpretation:

The reagents for making the given amino acids using Hell-Volhard-Zelinsky reaction need to be identified.

Concept introduction:

α -bromination of carboxylic acid in presence of bromine and a catalytic amount of phosphorous tribromide to form α -bromocarboxylic acid is known as Hell-Volhard-Zelinsky reaction.  The formed α -bromocarboxylic acid when treated with ammonia gives α -aminocarboxylic acid as the product.

EBK ORGANIC CHEMISTRY-PRINT COMPANION (, Chapter 25.3, Problem 12CC , additional homework tip  3

To identify: the reagents used for synthesis of alanine using Hell-Volhard-Zelinsky reaction.

EBK ORGANIC CHEMISTRY-PRINT COMPANION (, Chapter 25.3, Problem 12CC , additional homework tip  4

(c)

Interpretation Introduction

Interpretation:

The reagents for making the given amino acids using Hell-Volhard-Zelinsky reaction need to be identified.

Concept introduction:

α -bromination of carboxylic acid in presence of bromine and a catalytic amount of phosphorous tribromide to form α -bromocarboxylic acid is known as Hell-Volhard-Zelinsky reaction.  The formed α -bromocarboxylic acid when treated with ammonia gives α -aminocarboxylic acid as the product.

EBK ORGANIC CHEMISTRY-PRINT COMPANION (, Chapter 25.3, Problem 12CC , additional homework tip  5

To identify: the reagents used for synthesis of valine using Hell-Volhard-Zelinsky reaction.

EBK ORGANIC CHEMISTRY-PRINT COMPANION (, Chapter 25.3, Problem 12CC , additional homework tip  6

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Instructions: Complete the questions in the space provided. Show all your work 1. You are trying to determine the rate law expression for a reaction that you are completing at 25°C. You measure the initial reaction rate and the starting concentrations of the reactions for 4 trials. BrO³¯ (aq) + 5Br¯ (aq) + 6H* (aq) → 3Br₂ (l) + 3H2O (l) Initial rate Trial [BrO3] [H*] [Br] (mol/L) (mol/L) | (mol/L) (mol/L.s) 1 0.10 0.10 0.10 8.0 2 0.20 0.10 0.10 16 3 0.10 0.20 0.10 16 4 0.10 0.10 0.20 32 a. Based on the above data what is the rate law expression? b. Solve for the value of k (make sure to include proper units) 2. The proposed reaction mechanism is as follows: i. ii. BrО¸¯ (aq) + H+ (aq) → HBrO3 (aq) HBrO³ (aq) + H* (aq) → H₂BrO3* (aq) iii. H₂BrO³* (aq) + Br¯ (aq) → Br₂O₂ (aq) + H2O (l) [Fast] [Medium] [Slow] iv. Br₂O₂ (aq) + 4H*(aq) + 4Br‍(aq) → 3Br₂ (l) + H2O (l) [Fast] Evaluate the validity of this proposed reaction. Justify your answer.
е. Д CH3 D*, D20
C. NaOMe, Br Br

Chapter 25 Solutions

EBK ORGANIC CHEMISTRY-PRINT COMPANION (

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