HydrocarbonsHard
Question
The synthesis of 3-octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are
Options
A.BrCH2CH2CH2CH2CH3 and CH3CH2C ≡ CH
B.BrCH2CH2CH3 and CH3CH2CH2C ≡ CH
C.BrCH2CH2CH2CH2CH3 and CH3C ≡ CH
D.BrCH2CH2CH2CH3 and CH3CH2C ≡ CH
Solution
CH3 - CH2 - C ≡ CH 
CH3 - CH2 - C ≡ C-Na+
CH3 - CH2 - CH2 - CH2
-C ≡ C - CH2 - CH3 → CH3 - CH2 - CH2 - CH2 - C ≡ C - CH2 - CH3
3-octyne
CH3 - CH2 - C ≡ C-Na+CH3 - CH2 - CH2 - CH2
-C ≡ C - CH2 - CH3 → CH3 - CH2 - CH2 - CH2 - C ≡ C - CH2 - CH33-octyne
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