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Chemistry LibreTexts

9.11: Additional Exercises

  • Page ID
    182972
  • Alkyne Reactions

    10-1 Predict the product of these following reactions:

    a)

    b)

    c)

    d)

    10-2 Using acetylene as the starting material, show how you would synthesize the following compounds

    a)

    b) but-2-yne

    c)

    d)

    10-3 Identify the reagents needed to turn hex-1-yne into the following compounds

    a) hexane

    b) oct-3-yne

    c) cis-hept-2-ene

    d) trans-hept-2-ene

    e) 2,2-dibromohexane

    f) 1-bromohexene

    10-4 Show how you would accomplish the following synthetic transformations.

    a)

    b)

    c)

    d)

    e)

    f)

    10-5 Deduce the structure of each unknown from the information given.

    a) Upon catalytic hydrogenation, unknown A yields pentane. Ozonolysis of A yields butanoic acid, HOOC(CH2)2CH3 and CO2. Draw the structure of compound A

    b) Upon catalytic hydrogenation, unknown B yields pentane. Ozonolysis of B yields acetaldehyde, CH3CHO, and propionaldehyde, CH3CH2CHO.

    10-6 Use compound A from the previous problem (10-5) and any additional reagents you may need to synthesize the following compound.