A synthesis of estragole starting from 4- methyl phenol possible route has to be proposed. Concept Introduction: Methylation: phenol reaction with methyl bromide in the presence of base like sodium hydroxide gives methoxy product. NBS: N -Bromo succinimide is the brominating agent and it is used as a source of bromine in radical reaction . The Grignard reaction: Alkyl, vinyl, or aryl-magnesium halides ( RMgX ) is called as Grignard reagent. Grignard reagent is reaction with carbonyl compound such as aldehyde or ketone , produces corresponding alcohol is the product and it is the one of the carbon – carbon bond forming reaction. Tosylation reaction: The alcohol is treated with any tosyl chloride (methane sulfonyl chloride) which yields tosylated product this reaction is called as alkyl tosylate and which is shown below, Elimination reaction: An elimination reaction is removal of two substituents in a molecule and forms alkene. Lindlar reduction: The alkenes or alkynes can be reduced to alkanes with H 2 in the presence of metal catalyst ( Pd ) . This heterogeneous catalyst that consists of palladium deposited on calcium carbonate which is then poisoned with various forms of lead or Sulphur. The new C-H σ bonds are formed simultaneously from H atoms absorbed into the metal surface. Potassium tert-butoxide is a strong base, which used for the abstraction of acidic hydrogen from the molecule.

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Answer 1

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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 12, Problem 67IP

Interpretation Introduction

Interpretation:

A synthesis of estragole starting from 4- methyl phenol possible route has to be proposed.

Concept Introduction:

Methylation: phenol reaction with methyl bromide in the presence of base like sodium hydroxide gives methoxy product.

NBS: N-Bromo succinimide is the brominating agent and it is used as a source of bromine in radical reaction.

The Grignard reaction:

Alkyl, vinyl, or aryl-magnesium halides (RMgX) is called as Grignard reagent. Grignard reagent is reaction with carbonyl compound such as aldehyde or ketone, produces corresponding alcohol is the product and it is the one of the carbon – carbon bond forming reaction.

Tosylation reaction:

The alcohol is treated with any tosyl chloride (methane sulfonyl chloride) which yields tosylated product this reaction is called as alkyl tosylate and which is shown below,

Elimination reaction: An elimination reaction is removal of two substituents in a molecule and forms alkene.

Lindlar reduction: The alkenes or alkynes can be reduced to alkanes with H2 in the presence of metal catalyst (Pd). This heterogeneous catalyst that consists of palladium deposited on calcium carbonate which is then poisoned with various forms of lead or Sulphur. The new C-H σ bonds are formed simultaneously from H atoms absorbed into the metal surface. Potassium tert-butoxide is a strong base, which used for the abstraction of acidic hydrogen from the molecule.

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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 12, Problem 67IP

Interpretation Introduction

Interpretation:

A synthesis of estragole starting from 4- methyl phenol possible route has to be proposed.

Concept Introduction:

Methylation: phenol reaction with methyl bromide in the presence of base like sodium hydroxide gives methoxy product.

NBS: N-Bromo succinimide is the brominating agent and it is used as a source of bromine in radical reaction.

The Grignard reaction:

Alkyl, vinyl, or aryl-magnesium halides (RMgX) is called as Grignard reagent. Grignard reagent is reaction with carbonyl compound such as aldehyde or ketone, produces corresponding alcohol is the product and it is the one of the carbon – carbon bond forming reaction.

Tosylation reaction:

The alcohol is treated with any tosyl chloride (methane sulfonyl chloride) which yields tosylated product this reaction is called as alkyl tosylate and which is shown below,

Elimination reaction: An elimination reaction is removal of two substituents in a molecule and forms alkene.

Lindlar reduction: The alkenes or alkynes can be reduced to alkanes with H2 in the presence of metal catalyst (Pd). This heterogeneous catalyst that consists of palladium deposited on calcium carbonate which is then poisoned with various forms of lead or Sulphur. The new C-H σ bonds are formed simultaneously from H atoms absorbed into the metal surface. Potassium tert-butoxide is a strong base, which used for the abstraction of acidic hydrogen from the molecule.

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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 12, Problem 67IP

Interpretation Introduction

Interpretation:

A synthesis of estragole starting from 4- methyl phenol possible route has to be proposed.

Concept Introduction:

Methylation: phenol reaction with methyl bromide in the presence of base like sodium hydroxide gives methoxy product.

NBS: N-Bromo succinimide is the brominating agent and it is used as a source of bromine in radical reaction.

The Grignard reaction:

Alkyl, vinyl, or aryl-magnesium halides (RMgX) is called as Grignard reagent. Grignard reagent is reaction with carbonyl compound such as aldehyde or ketone, produces corresponding alcohol is the product and it is the one of the carbon – carbon bond forming reaction.

Tosylation reaction:

The alcohol is treated with any tosyl chloride (methane sulfonyl chloride) which yields tosylated product this reaction is called as alkyl tosylate and which is shown below,

Elimination reaction: An elimination reaction is removal of two substituents in a molecule and forms alkene.

Lindlar reduction: The alkenes or alkynes can be reduced to alkanes with H2 in the presence of metal catalyst (Pd). This heterogeneous catalyst that consists of palladium deposited on calcium carbonate which is then poisoned with various forms of lead or Sulphur. The new C-H σ bonds are formed simultaneously from H atoms absorbed into the metal surface. Potassium tert-butoxide is a strong base, which used for the abstraction of acidic hydrogen from the molecule.

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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 12, Problem 67IP

Interpretation Introduction