Alkyne reactions summary practice problems

This is a summary practice problem of Alkyne reactions including the key reactions such as:

Hydrohalogenation

Halogenation

Acid-Catalyzed hydration

Hydroboration-Oxidation

Ozonolysis

Reduction to alkanes

Reduction to cis and trans alkenes and others.

Practice

1.

Identify the reagents for each of the following reactions of internal and terminal alkynes:

Answer

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2.

On the following synthetic scheme, identify the reagents, in the correct order, that you would use to achieve the following synthetic transformations. Determine the structure of compounds A and B and the major organic products resulting from the alkyne.

Answer

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Solution

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3.

Suggest reagents for the following synthetic transformations of alkenes and alkynes:

 

a)
Answer

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b)
Answer

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c)
Answer

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d)
Answer

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4.

Use no other source of carbon to achieve the following synthetic transformations:

 

a)
Answer

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b)
Answer

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5.

Propose a plausible synthetic conversion of the following alkyne:

Answer

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Solution

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6.

Add the reagents, in the correct order, to achieve an efficient synthesis for each of the following multistep transformations.

a)
Answer

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b)
Answer

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c)
Answer

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d)
Answer

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e)
Answer

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f)
Answer

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Solution

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7.

Identify the missing reagents and products in the following synthetic scheme:

Answer

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8.

Identify the missing reagents and products in the following synthetic scheme:

 

Answer

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9.

Identify the missing reagents and products in the following synthetic scheme:

Answer

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10.

Bonus Question! Which fish is going to click?

 

Answer

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