Question

Which of the following compound when treated with CH₃MgI in dry ether followed by the hydrolysis will give propan - 2-ol ? *
CH₃CH₂CHO
CH₃CH₂OH
CH₃CHO
CH₃ CO CH₃

Answer 1

option A is the correct - A. CH3CH2CHO

Explanation:

The reaction of CH3MgBr on dry ice followed by acid hydrolysis gives acetic acid. Grignard reagent adds to carbon and oxygen double bond of carbon dioxide. 

Methyl group is added to carbon atom and −OMgBr is added to oxygen atom.

CO2+CH3MgBr⟶CH3COOMgBrH3O+CH3COOH+Mg(Br)OH

Option A is correct.

Answer 2

Answer:

The correct answer is (C)CH₃CHO

Explanation:

A Grignard reagent is an organomagnesium compound with the chemical formula 'R-Mg-X,' where R is an alkyl or aryl group and X is a halogen. In most cases, they are created by reacting an aryl halide or an alkyl halide with magnesium.

Here we use - CH₃MgBr/HOH

Isopropanol is   produced by reacting acetaldehyde with methyl magnesium bromide (Grignard reagent).

CH₃CHO --Grignard reagant-------->CH₃CH(OH)−CH₃

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