1.

(i) What is Clemmensen reduction? Explain it. (ii) Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.

Answer»

Solution :(i) Aldehyde and ketones when heated with zinc amalgam and concentrated hydrochloric ACID give hydrocarbons. This reaction is known as Clemmensen REDUCTION.
`underset("Acetaldehyde")(CH_(3)-underset(O)underset(||)C-H+4[H]) underset("Conc HCl")overset(Zn+Hg) to underset("Ethane")(CH_(3)-CH_(3)+H_(2)O)`
(ii) Aldol condensation of BENZALDEHYDE with acetone:
STEP 1:


Step 4:
`C_(6)H_(5)-underset(OH)underset(|)(CH)-CH_(2)_COCH_(3) underset(-H_(2)O) overset(Delta)to underset(("Benzylidene acetone"))(C_(6)H_(5)-CH=CH-COCH_(3))`


Discussion

No Comment Found

Related InterviewSolutions