Aldehydes Ketones Question 183

Question: The reagent with which both aldehyde and acetone react easily is

[CPMT 1973, 74, 89; BIT 1992]

Options:

A) Fehling’s reagent

B) Grignard reagent

C) Schiff’s reagent

D) Tollen’s reagent

Show Answer

Answer:

Correct Answer: B

Solution:

$ \underset{Aldehyde}{\mathop{R-\underset{\underset{H}{\mathop{|}}}{\mathop{C}}=O}}+\underset{Grignardreagent}{\mathop{R-Mg-X}}\to R-\underset{H}{\mathop{\underset{|}{\mathop{\overset{R}{\mathop{\overset{|}{\mathop{C}}}}}}}}-OMgX $

$ \underset{Ketone}{\mathop{R-\underset{\underset{R}{\mathop{|}}}{\mathop{C}}=O}}+R-Mg-X\to R-\underset{R}{\mathop{\underset{|}{\mathop{\overset{R}{\mathop{\overset{|}{\mathop{C}}}}}}}}-O-MgX $