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Exam 8: Alkenes: Structure and Preparation Via Elimination Reactions

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Question 41

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Provide an IUPAC name for the following compound.

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3-ethyl-2,...

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Question 42

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Draw the major product of the following reaction.

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Question 43

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Is the geometry of the following alkene E, Z, or neither?

For the following dehydration, draw the structure of the intermediate carbocation.

Which of the following is the correct mechanism for the elimination reaction of 1-bromo-2-methylcyclopentane with methoxide?

Which of the following is most reactive in an E1 reaction?

By what mechanism is the following reaction likely to occur?

Which of the following is the energy diagram for the following reaction?

For the following dehydration, draw the structure of the intermediate carbocation.

Which of the following is the IUPAC name for the following compound?

What would be the best base for performing the following elimination?

Drawn below is the structure of Crestor® (rosuvastatin) , a medication used to reduce cholesterol. What is the degree of substitution of the alkene of Crestor®?

Viridenomycin, shown below, is a polyene antibiotic that displays anti-tumor activity. Its structural complexity and chemical instability have made it a challenging target for organic chemists to synthesize. Ignoring the benzene ring, how many disubstituted Z alkenes are present in viridenomycin?

What is the product of the following elimination?

Provide an IUPAC name for the following compound.

A student runs an elimination reaction in lab, beginning with 1-iodo-1-methyl cyclohexane. If the product obtained shows exactly 5 distinct carbons in the (proton-decoupled) ¹³C NMR spectrum, what base could have been used to cause the elimination?

Draw the major product of the following elimination.

Draw the isomer of 2-bromo-1,1,3-trimethylcyclohexane that would be more reactive in an E2 elimination.

Which of the following alkyl halides would afford the indicated product upon reaction with sodium ethoxide?

Draw the E isomer of 3,4-dimethyl-3-hexene.