Preparation of valine by using Strecker synthesis needs to be shown. Concept introduction: Strecker synthesis is a process in which the aldehyde reacts with ammonium chloride and alkali cyanide to form α -aminonitrile. The formed α -aminonitrile is undergoes hydrolysis to give the respective amino acids. The general scheme can be shown as, Steps involved in Strecker synthesis are, Protonation of carbonyl Nucleophilic attack of ammonia to form imine Attack of cyanide to form α -aminonitrile Hydrolysis to give α -aminoacid

Question

Want to see the full answer?

Answer 1

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 25, Problem 56PP

Interpretation Introduction

Interpretation:

Preparation of valine by using Strecker synthesis needs to be shown.

Concept introduction:

Strecker synthesis is a process in which the aldehyde reacts with ammonium chloride and alkali cyanide to form α -aminonitrile. The formed α -aminonitrile is undergoes hydrolysis to give the respective amino acids. The general scheme can be shown as,

Steps involved in Strecker synthesis are,

Protonation of carbonyl

Nucleophilic attack of ammonia to form imine

Attack of cyanide to form α -aminonitrile

Hydrolysis to give α -aminoacid

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Experiment: Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below. Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization. Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C Sample C-Cool the third sample in an ice-bath to 0-2 °C Results: weight after recrystalization and melting point temp. A=0.624g,102-115° B=0.765g, 80-105° C=1.135g, 77-108 What is the percent yield of A,B, and C.

Rel. Intensity Q 1. Which one of the following is true of the compound whose mass spectrum is shown here? Explain how you decided. 100 a) It contains chlorine. b) It contains bromine. c) It contains neither chlorine nor bromine. 80- 60- 40- 20- 0.0 0.0 TT 40 80 120 160 m/z 2. Using the Table of IR Absorptions how could you distinguish between these two compounds in the IR? What absorbance would one compound have that the other compound does not? HO CI

Illustrate reaction mechanisms of alkenes with water in the presence of H2SO4, detailing each step of the process. Please show steps of processing. Please do both, I will thumb up for sure #1 #3

Answer 2

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 25, Problem 56PP

Interpretation Introduction

Interpretation:

Preparation of valine by using Strecker synthesis needs to be shown.

Concept introduction:

Strecker synthesis is a process in which the aldehyde reacts with ammonium chloride and alkali cyanide to form α -aminonitrile. The formed α -aminonitrile is undergoes hydrolysis to give the respective amino acids. The general scheme can be shown as,

Steps involved in Strecker synthesis are,

Protonation of carbonyl

Nucleophilic attack of ammonia to form imine

Attack of cyanide to form α -aminonitrile

Hydrolysis to give α -aminoacid

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 25, Problem 56PP

Interpretation Introduction

Interpretation:

Preparation of valine by using Strecker synthesis needs to be shown.

Concept introduction:

Strecker synthesis is a process in which the aldehyde reacts with ammonium chloride and alkali cyanide to form α -aminonitrile. The formed α -aminonitrile is undergoes hydrolysis to give the respective amino acids. The general scheme can be shown as,

Steps involved in Strecker synthesis are,

Protonation of carbonyl

Nucleophilic attack of ammonia to form imine

Attack of cyanide to form α -aminonitrile

Hydrolysis to give α -aminoacid

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 25, Problem 56PP

Interpretation Introduction