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Write structural formulas for each of the following:

(g) 1-Bromo-3-methylcyclohexene

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Write structural formulas for each of the following:

(f) (E)-3-Chloro-2-hexene

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Write structural formulas for each of the following:

(e) (Z)-3-Methyl-2-hexene

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Write structural formulas for each of the following:

(d) trans -1,4-Dichloro-2-butene

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Write structural formulas for each of the following:

(c) cis -3-Octene

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Write structural formulas for each of the following:

(b) 3-Ethyl-2-pentene

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Write structural formulas for each of the following:

(a) 1-Heptene

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Repeat Problem 3.40 for the stereoisomeric steroid skeleton having a cis ring fusion between the rst two rings. A typical steroid skeleton is shown along with the numbering scheme used for this class of compounds. Specify in each case whether the designated substituent is axial or equatorial. 

(a) Substituent at C-1 cis to the methyl groups 

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A typical steroid skeleton is shown along with the numbering scheme used for this class of compounds. Specify in each case whether the designated substituent is axial or equatorial. 

(a) Substituent at C-1 cis to the methyl groups 

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Biological oxidation of hydrocarbons is a commonly observed process.

(a) To what class of hydrocarbons does the reactant in the following equation belong? 

What is its IUPAC name? 

 

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Oxidation of 4-tert-butylthiane proceeds according to the equation shown, but the resulting sulfoxide is a mixture of two isomers. Explain by writing appropriate sructural formulas. 

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One of the following two stereoisomers is 20 kJ/mol (4.9 kcal/mol) less stable than the other. Indicate which isomer is the less stable, and identify the reason for its decreased stability.

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One stereoisomer of 1,1,3,5-tetramethylcyclohexane is 15 kJ/mol (3.7 kcal/mol) less stable than the other. Indicate which isomer is the less stable, and identify the reason for its decreased stability. 

 

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Identify the more stable stereoisomer in each of the following pairs, and give the reason for your choice: 

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Identify the more stable stereoisomer in each of the following pairs, and give the reason for your choice: 

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Identify the more stable stereoisomer in each of the following pairs, and give the reason for your choice: 

 

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Identify the more stable stereoisomer in each of the following pairs, and give the reason for your choice: 

(c) cis- or trans-1-Isopropyl-4-methylcyclohexane 

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Identify the more stable stereoisomer in each of the following pairs, and give the reason for your choice: 

(b) cis- or trans-1-Isopropyl-3-methylcyclohexane 

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Identify the more stable stereoisomer in each of the following pairs, and give the reason for your choice: 

(a) cis- or trans-1-Isopropyl-2-methylcyclohexane  

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Write a structural formula for the most stable conformation of each of the following compounds: 

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Write a structural formula for the most stable conformation of each of the following compounds: 

(f)  cis-1,1,3,4-Tetramethylcyclohexane 

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Write a structural formula for the most stable conformation of each of the following compounds: 

(e)  cis-1-tert-Butyl-4-ethylcyclohexane 

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Write a structural formula for the most stable conformation of each of the following compounds: 

(d)  trans-1-Isopropyl-3-methylcyclohexane 

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Write a structural formula for the most stable conformation of each of the following compounds: 

(c)  cis-1-Isopropyl-3-methylcyclohexane 

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In each of the following groups of compounds, identify the one with the largest heat of combustion and the one with the smallest. In which cases can a comparison of heats of combustion be used to assess relative stability? 

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