Acetonitrile (MeCN) reacts with MeMgI followed by acid treatment to give acetone.
What will be the product when HCN is made to undergo the same sequence of reactions as above?
Answer:
Grignard Reagent is a source of aklyl carbanion which can behave as a base as well as a nucleophile. Also, Grignard reagent gets decomposed in presence of any acidic compound. In the given reaction methyl carbanion generated from the Grgnard reagent acts as a base and will abstract the proton from HCN and get decomposed as methane.
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