The structure of the major stereoisomer formed in the reaction of 3-buten-2-ol with peroxy acid is to be given. The relationship between the two isomers is to be established. The fact whether the two stereoisomers are enantiomers or diastereomers of each is to be specified. The four stereoisomeric products that are formed when racemic 3-buten-2-ol undergo epoxidation is to be given along with their relative amounts. Concept Introduction: > Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond in an addition reaction. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond. > In epoxidation of alkenes, peroxyacids transfer oxygen to the double bond of alkenes to form a three membered oxygen containing ring called as epoxides . Addition is stereospecific and syn. A commonly used peroxyacid is peroxyacetic acid. > Peroxyacid prefers to attack the less sterically hindered face of the double bond in orderto form corresponding epoxides. > Diastereomers are the non-mirror images of each other having opposite absolute configuration at only one chiral carbon atom.

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Answer 1

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Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 8, Problem 38P

Interpretation Introduction

Interpretation:

The structure of the major stereoisomer formed in the reaction of 3-buten-2-ol with peroxy acid is to be given. The relationship between the two isomers is to be established. The fact whether the two stereoisomers are enantiomers or diastereomers of each is to be specified. The four stereoisomeric products that are formed when racemic 3-buten-2-ol undergo epoxidation is to be given along with their relative amounts.

Concept Introduction:
>
Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond in an addition reaction. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond.
>
In epoxidation of alkenes, peroxyacids transfer oxygen to the double bond of alkenes to form a three membered oxygen containing ring called as epoxides. Addition is stereospecific and syn. A commonly used peroxyacid is peroxyacetic acid.
>
Peroxyacid prefers to attack the less sterically hindered face of the double bond in orderto form corresponding epoxides.
>
Diastereomers are the non-mirror images of each other having opposite absolute configuration at only one chiral carbon atom.

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Answer 2

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 8, Problem 38P

Interpretation Introduction

Interpretation:

The structure of the major stereoisomer formed in the reaction of 3-buten-2-ol with peroxy acid is to be given. The relationship between the two isomers is to be established. The fact whether the two stereoisomers are enantiomers or diastereomers of each is to be specified. The four stereoisomeric products that are formed when racemic 3-buten-2-ol undergo epoxidation is to be given along with their relative amounts.

Concept Introduction:
>
Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond in an addition reaction. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond.
>
In epoxidation of alkenes, peroxyacids transfer oxygen to the double bond of alkenes to form a three membered oxygen containing ring called as epoxides. Addition is stereospecific and syn. A commonly used peroxyacid is peroxyacetic acid.
>
Peroxyacid prefers to attack the less sterically hindered face of the double bond in orderto form corresponding epoxides.
>
Diastereomers are the non-mirror images of each other having opposite absolute configuration at only one chiral carbon atom.

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Answer 3

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 8, Problem 38P

Interpretation Introduction

Interpretation:

The structure of the major stereoisomer formed in the reaction of 3-buten-2-ol with peroxy acid is to be given. The relationship between the two isomers is to be established. The fact whether the two stereoisomers are enantiomers or diastereomers of each is to be specified. The four stereoisomeric products that are formed when racemic 3-buten-2-ol undergo epoxidation is to be given along with their relative amounts.

Concept Introduction:
>
Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond in an addition reaction. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond.
>
In epoxidation of alkenes, peroxyacids transfer oxygen to the double bond of alkenes to form a three membered oxygen containing ring called as epoxides. Addition is stereospecific and syn. A commonly used peroxyacid is peroxyacetic acid.
>
Peroxyacid prefers to attack the less sterically hindered face of the double bond in orderto form corresponding epoxides.
>
Diastereomers are the non-mirror images of each other having opposite absolute configuration at only one chiral carbon atom.

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Answer 4

Question

Definition Definition Molecules that have multiple bonds between their carbon atoms. Alkenes are hydrocarbons with a double bond between two adjacent carbon atoms (R 2 C=CR 2 ), whereas alkynes are hydrocarbons with a triple bond between two adjacent carbon atoms R-C=C-R . These two groups are known as unsaturated hydrocarbons. They have fewer hydrogen atoms when compared with alkanes with same number of carbon atoms. The general molecular formula for an unsaturated hydrocarbon can be represented as C n H 2n +2 .

Chapter 8, Problem 38P

Interpretation Introduction