The hydroboration-oxidation of internal alkynes produces ketones. (a) When hydroboration-oxidation is applied to but-2-yne, a single pure
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(a) When hydroboration-oxidation is applied to but-2-yne, a single pure product is obtained. Determine the structure of this product, and show the intermediates in its formation.
(b) When hydroboration-oxidation is applied to pent-2-yne, two products are obtained. Show why a mixture of products should be expected with any unsymmetricalinternal alkyne.
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