Engineering
Chemistry
Alkene
Reactions of Organometallic Compound Grignard Reagents
Question
Select the product from the following
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Solution
The reaction is a nucleophilic substitution (SN2) where CN⁻ attacks the alkyl halide. The stereochemistry inverts due to backside attack.
Reactant is (R)-2-bromobutane: with chiral center (R).
Product is 2-cyanobutane: with inverted (S) configuration.
Only structure III shows the correct (S) stereochemistry after inversion. Structures I and II are incorrect representations.
Final Answer: III