Rules to name alkanes should be determined. Concept introduction: Organic compounds that consist of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them, while hydrocarbons with multiple bonds are called unsaturated hydrocarbons . Alkanes are saturated hydrocarbons with general formula of C n H 2 n + 2 , where n is number of carbon atoms.

Question

Draw the most stable chair conformation of 1-ethyl-1-methylcyclohexane, clearly showing the axial and equatorial substituents. [4] Draw structures corresponding to the following IUPAC name for each of the following compounds; [5] i) 4-Isopropyl-2,4,5-trimethylheptane ii) trans-1-tert-butyl-4-ethylcyclohexane iii) Cyclobutylcycloheptane iv) cis-1,4-di-isopropylcyclohexane (chair conformation) v) 3-Ethyl-5-isobutylnonane

Answer 1

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 4, Problem 8E

Interpretation Introduction

Interpretation:Rules to name alkanes should be determined.

Concept introduction:Organic compounds that consist of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them, while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of CnH2n+2 , where n is number of carbon atoms.

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Draw the most stable chair conformation of 1-ethyl-1-methylcyclohexane, clearly showing the axial and equatorial substituents. [4] Draw structures corresponding to the following IUPAC name for each of the following compounds; [5] i) 4-Isopropyl-2,4,5-trimethylheptane ii) trans-1-tert-butyl-4-ethylcyclohexane iii) Cyclobutylcycloheptane iv) cis-1,4-di-isopropylcyclohexane (chair conformation) v) 3-Ethyl-5-isobutylnonane

Draw and name molecules that meet the following descriptions; [4] a) An organic molecule containing 2 sp2 hybridised carbon and 1 sp-hybridised carbon atom. b) A cycloalkene, C7H12, with a tetrasubstituted double bond. Also answer question 2 from the image

H 14. Draw the line angle form of the following molecule make sure you use the proper notation to indicate spatial positioning of atoms. F F H 15. Convert the following condensed form to line angle form: (CH3)3CCH2COCH2CON(CH2CH3)2

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 4, Problem 8E

Interpretation Introduction

Interpretation:Rules to name alkanes should be determined.

Concept introduction:Organic compounds that consist of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them, while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of CnH2n+2 , where n is number of carbon atoms.

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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 4, Problem 8E

Interpretation Introduction

Interpretation:Rules to name alkanes should be determined.

Concept introduction:Organic compounds that consist of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them, while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of CnH2n+2 , where n is number of carbon atoms.

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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 4, Problem 8E

Interpretation Introduction