Question

Cinnamci acid is fomed when `C_(6)H_(5)-CHO` condenses with `(CH_(3)CO_(2))O` in the presence of
A. concentreated `H_(2)SO_(4)`
B. sodium acetate
C. sodium metal
D. anhydrous `ZnCl_(2)`

Answer 1

Correct Answer - B
When `C_(6)CHO` condneses with `(CH_(3)CO_(2))` O in the presence of sodium acetate then cinnamci aciod is formed. This reaction is called Perkin reaction
`underset("Benzaldehyde")(C_(6)H_(5)-CHO)+ underset("Acetic anhydride")((CH_(3)CHO)_(2)O)overset(CH_(3)CO overset(-)O overset(+)Na) underset(100^(@)C)to underset("Cinnamic acid")(C_(6)H_(5)CH=CHCOOH)+CH_(3)COOH`