The Strecker synthesis of DL-phenylalanine is to be outlined, and by preparing the starting aldehyde using acrolein and methanethiol, Strecker synthesis of DL-methanethiol is to be outlined. Concept introduction: 舧 Amino acids are organic compounds containing amine ( − NH 2 ) and carboxyl ( − COOH ) functional group along with a side chain (R group) specific to each amino acid. 舧 Strecker synthesis involves treating an aldehyde with ammonia and hydrogen cyanide to give an aminonitrile, which can be hydrolyzed to an αa-amino acid. The general reaction is as: 舧 The Strecker synthesis involves formation of imine from phenyl acetaldehyde and ammonia, which on addition of hydrogen cyanide produces α − amino nitrile, and further undergoes hydrolysis to yield DL-phenylalanine. 舧 Acrolein and methanethiol on treating with a base gives 3 − ( methylthio ) propanal , which when subjected to Strecker synthesis forms imine from 3 − ( methylthio ) propanal and ammonia, which on addition of hydrogen cyanide produces α − amino nitrile, and further undergoes hydrolysis in the second step to yield DL-Methionine.

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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 24, Problem 4PP

Interpretation Introduction

Interpretation:

The Strecker synthesis of DL-phenylalanine is to be outlined, and by preparing the starting aldehyde using acrolein and methanethiol, Strecker synthesis of DL-methanethiol is to be outlined.

Concept introduction:

舧 Amino acids are organic compounds containing amine (−NH2) and carboxyl (−COOH) functional group along with a side chain (R group) specific to each amino acid.

舧 Strecker synthesis involves treating an aldehyde with ammonia and hydrogen cyanide to give an aminonitrile, which can be hydrolyzed to an αa-amino acid.

The general reaction is as:

舧 The Strecker synthesis involves formation of imine from phenyl acetaldehyde and ammonia, which on addition of hydrogen cyanide produces α− amino nitrile, and further undergoes hydrolysis to yield DL-phenylalanine.

舧 Acrolein and methanethiol on treating with a base gives 3−(methylthio)propanal, which when subjected to Strecker synthesis forms imine from 3−(methylthio)propanal and ammonia, which on addition of hydrogen cyanide produces α− amino nitrile, and further undergoes hydrolysis in the second step to yield DL-Methionine.

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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 24, Problem 4PP

Interpretation Introduction

Interpretation:

The Strecker synthesis of DL-phenylalanine is to be outlined, and by preparing the starting aldehyde using acrolein and methanethiol, Strecker synthesis of DL-methanethiol is to be outlined.

Concept introduction:

舧 Amino acids are organic compounds containing amine (−NH2) and carboxyl (−COOH) functional group along with a side chain (R group) specific to each amino acid.

舧 Strecker synthesis involves treating an aldehyde with ammonia and hydrogen cyanide to give an aminonitrile, which can be hydrolyzed to an αa-amino acid.

The general reaction is as:

舧 The Strecker synthesis involves formation of imine from phenyl acetaldehyde and ammonia, which on addition of hydrogen cyanide produces α− amino nitrile, and further undergoes hydrolysis to yield DL-phenylalanine.

舧 Acrolein and methanethiol on treating with a base gives 3−(methylthio)propanal, which when subjected to Strecker synthesis forms imine from 3−(methylthio)propanal and ammonia, which on addition of hydrogen cyanide produces α− amino nitrile, and further undergoes hydrolysis in the second step to yield DL-Methionine.

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Answer 3

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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 24, Problem 4PP

Interpretation Introduction

Interpretation:

The Strecker synthesis of DL-phenylalanine is to be outlined, and by preparing the starting aldehyde using acrolein and methanethiol, Strecker synthesis of DL-methanethiol is to be outlined.

Concept introduction:

舧 Amino acids are organic compounds containing amine (−NH2) and carboxyl (−COOH) functional group along with a side chain (R group) specific to each amino acid.

舧 Strecker synthesis involves treating an aldehyde with ammonia and hydrogen cyanide to give an aminonitrile, which can be hydrolyzed to an αa-amino acid.

The general reaction is as:

舧 The Strecker synthesis involves formation of imine from phenyl acetaldehyde and ammonia, which on addition of hydrogen cyanide produces α− amino nitrile, and further undergoes hydrolysis to yield DL-phenylalanine.

舧 Acrolein and methanethiol on treating with a base gives 3−(methylthio)propanal, which when subjected to Strecker synthesis forms imine from 3−(methylthio)propanal and ammonia, which on addition of hydrogen cyanide produces α− amino nitrile, and further undergoes hydrolysis in the second step to yield DL-Methionine.

Expert Solution & Answer

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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 24, Problem 4PP

Interpretation Introduction