How is propyne prepared by 1 2 dicloropropane
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Propyne can be prepared by dehydrohalogenation of 1,2-dichloropropane.
1,2-Dichloropropane on first dehydrohalogenation gives 1-chloropropene.
CH3-CH(Cl)-CH2(Cl) + ∆ --> CH3-C(Cl)=CH + HCl
1-Chloropropene on further dehydrohalogenation gives propyne.
CH3-C(Cl)=CH2 + ∆ --> CH3-C≡CH + HCl
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