1.

How will you bring about the following conversion: (i) Propanone to propane (ii) Benzoyl chloride to benzaldehyde. (iii) Ethanal to but-2-enal.

Answer»

Solution :(i) `UNDERSET("Propanone")(CH_(3)-overset(O)overset(||)(C)-CH_(3) underset(Zn.Hg+HCl)overset("Clemmensen Reduction")(to) CH_(3)-underset("Propane")(CH_(2))-CH_(3)`

(iii) `underset("Ethanal")(CH_(3)-CHO)underset("ALDOL CONDENSATION")overset("Dil" NaOH)(to) underset("3-hydroxybutanal")(CH_(3)-overset(OH)overset(|)(CH)-CH_(2)-CHO)underset(-H_(2)O)overset(Delta)(to)CH_(3)-underset("But-2-enal")(CH)=CH-CHO`


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