Question

Draw a structural formula for an alkyne of molecular formula c8h14 that yields 3-ethylhexane on catalytic hydrogenation. click the "draw structure" button to launch the drawing utility.

Answer 1

Answer:

3-ethyl-1-hexyne or 4-ethyl-1-hexyne.

Explanation:

Hello,

By means of the more likely reagents to undergo the stated hydrogentation via catalysis with palladium or platinum, its structure is shown on the attached picture which is eligible for either 3-ethyl-1-hexyne or 4-ethyl-1-hexyne since they lead to the very same product. Do not forget that such hydrogenation covers up all the insaturations turning out into the specified alkane.

Best regards.

Answer 2

If it an alkyne and gives 3-ethylhexane  on hydrogenation then the reaction will be

There will be three isomers of alkyne with given molecular formula

The reactions are shown in the attached figure