Comment on the stereochemistry of the product | vedclass

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(A) The starting material,$3$-methylpentan-$2$-one,contains a chiral center at the $C3$ position.The nucleophilic attack of the Grignard reagent $(CH_

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diastereomers

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(A) The starting material,$3$-methylpentan-$2$-one,contains a chiral center at the $C3$ position.The nucleophilic attack of the Grignard reagent $(CH_3MgBr)$ occurs at the $sp^2$ hybridized carbonyl carbon $(C2)$.Since the $C3$ chiral center is already present and its configuration remains fixed during the reaction,the attack of the nucleophile from the two different faces of the planar carbonyl group creates a new chiral center at $C2$.This results in the formation of two products that have the same configuration at $C3$ but different configurations at $C2$.Such stereoisomers,which are not mirror images of each other,are known as diastereomers.

Comment on the stereochemistry of the products for the following reaction:
$3$-methylpentan-$2$-one + $CH_3MgBr$ followed by $NH_4Cl$ workup.

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Comment on the stereochemistry of the products for the following reaction:$3$-methylpentan-$2$-one + $CH_3MgBr$ followed by $NH_4Cl$ workup.