Question

when ethanal react with CH3MGBR followed by hydrolysis.​

Answer 1

Reaction of Ethanol and CH3MgBr.

Explanation:

• CH3MGBR is a Grignard reagent.
• Grignard reagents attack carbon atom to give alkoxide intermediate.
• Grignard reagent upon reacting with ethanol gives alcohol.
• It takes hydrogen from water and prevents the reaction from happening.
• With the addition of formaldehyde it makes primary alcohol.
• Other aldehydes give secondary alcohols.
• On the other hand, ketones give territory alcohol.
• The further acidic reaction converts that alkoxide into alcohol.

Learn more about Ethanol reaction with CH3MgBr.

Describe the mechanism of the addition of grignard reagent to the carbonyl group of a compound to form an adduct which on hydrolysis yield an alcohol.

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Answer 2

Complete Question:

What happens when ethanal react with CH3MGBR followed by hydrolysis.​

Correct Answer:

When Ethanal reacts with CH3MgBr followed by hydrolysis then Propan-2-ol is formed.

- CH3MgBr is known as the Grignard reagent.

- This CH3MgBr adds up to the carbonyl group of ethanal by nucleophilic addition reaction to form an adduct.

- The chemical reaction is given as follows:

CH3CHO + CH3MgBr → CH3-CH(CH3)-OMgBr

- When this adduct is hydrolysed, then Propan-2-ol is formed as follows:

CH3-CH(CH3)-OMgBr + H2O → CH3-CH(OH)-CH3 + Mg(OH)Br