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Whar is the product formed during the reaction given below: 

CH\equiv CH+\underset{(2\ eq.)}{HOCl}\overset{0\degree C}{\longrightarrow} 

Option: 1


Option: 2


Option: 3


Option: 4


Answers (1)


As we have learnt,

Addition of Hypochlorous acid
Alkynes when passed into hypochlorous acid solution, add two equivalents of the reagent to form an \alpha,\alpha dichloro carbonyl compound. The reaction occurs as follows


With HOCl, acetylene undergoes addition as depicted below

HC\equiv CH+2HOCl{\longrightarrow} HCO-CH(Cl)_2

Therefore, option (4) is correct.

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seema garhwal

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