Consider the following reactions:

'A' is : 

  • Option 1)

    CH\equiv CH

     

     

     

  • Option 2)

    CH_{3}-C\equiv C-CH_{3}

  • Option 3)

    CH_{3}-C\equiv CH

  • Option 4)

    CH_{2}=CH_{2}

Answers (1)

 

Addition of water on alkyne -

By the addition of water on alkyne in presence of HgSO4 and H2SO4 alkyne give aldehyde or ketone.

- wherein

 

 

 

 

\begin{matrix} CH_{3}-C\equiv CH\\ (terminal A'kyne ) \end{matrix}\xrightarrow[\Delta ]{Ag_{2}O}CH_{3}-C\equiv C-Ag

CH_{3}-C\equiv CH\xrightarrow[dil.H_{2}SO_{4}]{Hg^{2t}} \begin{matrix} &OH &H & & \\ & | & | & & \\ CH_{3} -& C & =CH_{2} & & \end{matrix}\rightleftharpoons\\*\: \: \: \: \: \: \:                

                            (kucherov reaction)             

                                                                                                                                                                                                                   

 

 


Option 1)

CH\equiv CH

 

 

 

Option 2)

CH_{3}-C\equiv C-CH_{3}

Option 3)

CH_{3}-C\equiv CH

Option 4)

CH_{2}=CH_{2}

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