Question

Write structural formula of the alcohol that results when
acetaldehyde is reacted with CH,MgBr in the presence of
dry ether and the product is hydrolysed.​

Answer 1

The structural formula of the alcohol that results when

acetaldehyde is reacted with CH,MgBr in the presence of

dry ether and the product is hydrolysed is CH3-CHOH-CH3

• The reaction involves two steps : 1) Reaction of Grignard reagent CH3MgBr with Acetaldehyde
• 2) This leads to breakage of double bond of carbonyl C and Oxygen.
• It forms an adduct CH3CCH3H+O-MgBr.
• This adduct is now hydrolysed , so the bond between O- and MgBr breakes to form an alcohol and an MgOHBr.
• Thus the overall reaction leads to formation of Propane-2-ol and MgOHBr.