Question

What is the expected functional group produced when cyclooctyne is reacted with disiamylborane, followed with treatment of basic hydrogen peroxide? Group of answer choices carboxylic acid diol ketone ether aldehyde

Answer 1

Answer:

ketone

Explanation:

This reaction is known as the hydroboration of alkynes. It yields a ketone but proceeds via the formation of a enol before the ketone is formed.

Hence the enol form is a sort of precursor to the formation of the ketone which becomes the final product of the entire reaction mechanism.

Answer 2

Answer:

The functional group is Ketone

Explanation:

the reaction between cyclooctyne and disiamylborane is given as;

cyclooctyne molecular formula is C₈H₁₂

disiamylborane molecular formula is C₁₀H₂₃B

  C₈H₁₂    +   C₁₀H₂₃B ------------------- hydroboration of alkynes

Enol is obtained. By treating it with hydrogen peroxide, the functional group Ketone is obtained.

Hydroboration is the reaction of diborane with the alkynes.