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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Elimination of HBr from 2-bromobutane affords a mixture of but-1-ene and but-2-ene. With sodium ethoxide as base, but2-ene constitutes 81% of the alkene products, but with potassium tert-butoxide, but-2-ene constitutes only 67% of the alkene products. Offer an explanation for this difference.

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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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Check out a sample textbook solution

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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

Want to see the full answer?

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