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Chapter 7: Q14P (page 301)

What ketones would be formed from the acid-catalyzed addition of water to 3-heptyne?

Short Answer

Expert verified

R-C≡C-R' + H₂O → R-CH₂-CO-R' + R-CO-CH₂-R'

As here unsymmetrical alkyne is there so two ketones will form:

Step by step solution

01

What is acid catalysed addition of water

Acid-catalyzed addition of water is also called as acid catalyzed hydration. In this reaction water added with an unsaturated substrate in presence of an acid. Here the acid acts as the catalyst. The common acid catalysts are sulphuric acid and phosphoric acid.

02

Final answer

As here unsymmetrical alkyne is there so two ketones will form:

Both the ketones formed with the oxygen attached with triple bonded carbon atom and H2 attached with other triple bonded carbon atom.

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Most popular questions from this chapter

Name the following:

Which alkyne would be the best one to use for the synthesis of each of the following ketones?

Which of the following pairs are keto–enol tautomers?

Draw a condensed structure for each of the following:

a.2-hexyne

b.5-ethyl-3-octyne

c.methylacetylene

d.vinylacetylene

e.methoxyethyne

f.sec-butyl-tert-butylacetylene

g.1-bromo-1-pentyne

h.5-methyl-2-cyclohexenol

i.diethylacetylene

j.di-tert-butylacetylene

k.cyclopentylacetylene

l. 5,6-dimethyl-2-heptyne

Draw the mechanism for the following reaction
See all solutions

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