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Last updated date: 05th Dec 2023
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# How can you obtain but-$2$-one from but- $2$-yne?

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Hint: The compounds having the suffixes -one is those compounds which have double bonded oxygen on the carbon. This is also called the keto compound. The two bonds present are pi and sigma bonds. If two hydroxide ions are attached to two carbon chains which are adjacent to each other in an acidic medium, then water gets dehydrated.

We have been given that we need to convert but- $2$-yne to butane-$2$-one.
but- $2$-yne is an unsaturated hydrocarbon which says that the triple bond which is denoted by the suffix -yne, is present on the second carbon of the chain. The prefix but- tells us about the number of carbons that are four carbons. It is a straight chain and we have to convert this into but-$2$-one. Here the keto compounds are also present on the second carbon.
So, we can convert but-$2$-one from but- $2$-yne by using mercury sulphate and hydrogen sulphate.