The structures for two stereoisomeric products of hydrogenation of 3-carene are to be written. One stereoisomer out of the two possible stereoisomers was formed on catalytic hydrogenation over platinum is to be determinedand the reason for its formation is to be explained. Concept Introduction: > Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond. > Hydrogen atoms are predominantly transferred to that face of the double bond which is less sterically hindered.

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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 36P

Interpretation Introduction

Interpretation:

The structures for two stereoisomeric products of hydrogenation of 3-carene are to be written. One stereoisomer out of the two possible stereoisomers was formed on catalytic hydrogenation over platinum is to be determinedand the reason for its formation is to be explained.

Concept Introduction:
>
Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond.
>
Hydrogen atoms are predominantly transferred to that face of the double bond which is less sterically hindered.

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Conversion of an alkene to a halohydrin and internal displacement of a halide ion by an alkoxide ion are both stereoselective. Use this information to demonstrate that the configuration of the alkene is preserved in the epoxide. As an illustration, show that reaction of cis-2-butene by this two-step sequence gives cis-2,3- dimethyloxirane (cis-2-butene oxide).

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Answer 2

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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 36P

Interpretation Introduction

Interpretation:

The structures for two stereoisomeric products of hydrogenation of 3-carene are to be written. One stereoisomer out of the two possible stereoisomers was formed on catalytic hydrogenation over platinum is to be determinedand the reason for its formation is to be explained.

Concept Introduction:
>
Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond.
>
Hydrogen atoms are predominantly transferred to that face of the double bond which is less sterically hindered.

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Answer 3

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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 36P

Interpretation Introduction

Interpretation:

The structures for two stereoisomeric products of hydrogenation of 3-carene are to be written. One stereoisomer out of the two possible stereoisomers was formed on catalytic hydrogenation over platinum is to be determinedand the reason for its formation is to be explained.

Concept Introduction:
>
Alkenes are unsaturated hydrocarbons that react with substances that add to the double bond. Catalytic addition is a syn addition of hydrogen atoms to the carbon-carbon double bond.
>
Hydrogen atoms are predominantly transferred to that face of the double bond which is less sterically hindered.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

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 36P

Interpretation Introduction