Part B: Choose two other internal alkynes that will yield only one product upon

Question

Part B: Choose two other internal alkynes that will yield only one product upon hydroboration-oxidation. Check all that apply.

A) 4-decyne

B) 5-decyne

C) 3-heptyne

D) 1-propyne

E) 3-hexyne

Part A Explain why a single pure product is obtained from hydroboration-oxidation of 2-butyne, whereas two products are obtained from hydroboration-oxidation of 2-pentyne. 2-pentyne is symmetrical, and 2-butyne is not symmetrical. 2-butyne is a liquid under normal conditions, and 2-pentyne is a gas under normal conditions. 2-pentyne is a liquid under normal conditions, and 2-butyne is a gas under normal conditions. 2-butyne is symmetrical, and 2-pentyne is not symmetrical Submit My Answers Give Up Correct Part B Choose two other internal alkynes that will yield only one product upon hydroboration-oxidation. Check all that apply. 4-decyne 5-decyne 3-heptyne -1-propyne 3-hexyne Submit My Answers Give Up

Explanation / Answer

Symmetrical alkynes gives only one product. 5-dekyne and 3- hexyne is are symmetrical alkyne and hence give single product. Option B and E is the answer.

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