how to convert propan-2-ol to acetylene
Answers
Firstly propanol is an alcohol while acetone (propanone) is a ketone. They are not the same stuff. Propanol exist in two isomeric forms: 1-propanol or 2-propanol. Acetylene is a two carbon alkyne that is the starting material for preparation of propanol and finally acetone. First react acetylene with sodium amide in liquid ammonia (cold), then react the mixture with chloromethane. The product would be propyne.
Propyne is hydrogenated over Pt or Pd catalyst to get propene. Now treat propene with water in presence of H2SO4 to get 2-propanol. Oxidation of propanol will yield acetone.
HC≡CH + NaNH2 —liq NH3→ HC≡CNa + NH3
2. HC≡CNa + CH3Cl → CH3-C≡CH + NaCl
3. CH3-C≡CH + 1mol H2 —Pt→ CH3-CH=CH2
4. CH3-CH=CH2 + H2O —H2SO4→ CH3-CH(OH)-CH3 [2-propanol]
5. CH3-CH(OH)-CH3 —[O]→ CH3-CO-CH3 [Acetone]
There are other methods that can be employed to prepare propanol and acetone from acetylene.
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Explanation:
how to convert propan-2-ol to acetylene