Alcohol, Phenol and EtherHard
Question
Which of the following reactions will not reasult in the formation of carbon-carbon bonds ?
Options
A.Reimer-Tiemana reaction
B.Cannizaro reaction
C.Wurtz reaction
D.Friedel-Crafts acylation
Solution
(a) Reimer-Tiemann reaction,
+ CHCl3 + NaOH →
+ NaOH + H2O
(Here, a new C - C bond is formed.)
(b) Cannizaro reaction,
2HCHO
CH3OH + HCOONa
(No new C - C bond is formed in this reaction.)
(c) Wurtz reaction,
2RX + dry Na
(One new C - C bond is formed.)
(d) Friedel-Crafts acylation,



(New C - C bond is formed.)
Thus, among the given reaction, only Cannizaro reaction does not involve the formation of a new C - C bond.
+ CHCl3 + NaOH →
+ NaOH + H2O (Here, a new C - C bond is formed.)
(b) Cannizaro reaction,
2HCHO
CH3OH + HCOONa (No new C - C bond is formed in this reaction.)
(c) Wurtz reaction,
2RX + dry Na
(One new C - C bond is formed.)
(d) Friedel-Crafts acylation,



(New C - C bond is formed.)
Thus, among the given reaction, only Cannizaro reaction does not involve the formation of a new C - C bond.
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