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Conversion of Propanone to propene...

Conversion of Propanone to propene

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(i) Acetaldehyde to acetone
`CH_(3)CHOoverset([O])underset(K_(2)Cr_(2)O_(7)//H^(+))toCH_(3)COOHoverset(Ca(OH)_(2))underset(Delta)to(CH_(3)COO)_(2)Caoverset(Delta)underset(-CaCO_(3))toCH_(3)COCH_(3)`
(ii) Propanone to propene
`CH_(3)COCH_(3)overset(LiAlH_(4))toCH_(3)-overset(OH)overset(|)(CH)-CH_(3)overset("conc."H_(2)SO_(4))underset(Deltat)toCH_(3)CH=CH_(2)`
(iii) Propene to propanone
`CH_(3)CH=CH_(2)overset(H_(2)O //H^(+))toCH_(3)-overset(OH)overset(|)(CH)-CH_(3)overset(K_(2)Cr_(2)O_(7)//H^(+))toCH_(3)-overset(O)overset(||)(C)-CH_(3)`
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