Question

When $1,2-$ dibromodecane was treated with potassium hydroxide in aqueous ethanol, it yielded a mixture of three isomeric compounds was converted to 1-decyne on reaction with sodium amide in dimethyl sulphoxide. Identify these three compounds.

Answer 1

The treatment of 1,2 dibromodecane with $KOH$ in aqueous ethanol gives three isomeric compounds due to dehydrobromination (loss of one $HBr$ molecule).
These compounds on treatment with sodium amide in dimethyl sulphoxide gives 1-decyne.