State whether each of the following reactions is non-enantioselective, partially

Question

State whether each of the following reactions is non-enantioselective, partially enantioselective. completely enantioselective, non-diastereoselective, partially diastereoselective, or completely diastereoselective. If appropriate, state if these reactions are enantiospecific or diastercospecific. Describe your reasoning clearly and succinctly. If relevant, also state whether there is retention or inversion of configuration in these reactions, and to what extent. Finally, describe in detail the mechanistic basis for any observed stereoselectivity.

Explanation / Answer

Both the given are stereoselective and completely enantioselective as NaI reacts with one stereocentre selectively in each reactant to produce corresponding product. The reactions are also stereospecific as only one product is formed exclusively with complete absence of the other There is 100% inversion in configuration as (1S,4S)-4-methylcycloheptyl 4-methylbenzenesulfonate is converted to (1R,4S)-1-iodo-4-methylcycloheptane and only one product is obtained.

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