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18 Substitution--Kinetics, stereochemistry

4 organic organic lecture series mechanisms sn2 an

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Unformatted text preview: ining step. 4 Organic Organic Lecture Series Mechanisms SN2 • An energy diagram for an SN2 reaction. There is one transition state and no reactive intermediate. 5 Organic Lecture Series Mechanisms SN1 • Bond breaking between carbon and the leaving group is entirely completed before bond forming with the nucleophile begins. • This mechanism is designated SN1 where – S = substitution – N = nucleophilic – 1 = unimolecular (only one species is involved in the rate-determining step) 6 Organic Organic Lecture Series Mechanisms SN1 – Step 1: Ionization of the C-X bond gives a ca...
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