Structure and Bonding: Dueling Mechanisms - SN1 verses SN2 You
may want to review the two activities that introduce the two
different substitution reactions Reaction Rates and Molecular
Crowding (SN2)and Consecutive Reactions (SN1). Explain the
product(s) of the reaction of 2-bromobutane with the
nucleophile, OH-: C4H9Br + OH- C4H9OH + Br- What type of alkyl
halide is 2-bromobutane? methyl 1o 2o 3o Are the two products of
the SN1 pathway isomers? If so, why? For help see the last part
of The Arrangement of Bonds. If only the SN1 pathway was to
occur, what would the proportions of the two products be? Why?
What happens if both SN1 and SN2 reaction mechanisms occur
together in a reaction? |Mechanism||Describe the Product(s) of
the Reaction||Favored Conditions| 3o alkyl halide, water or
alcohol as solvent, poor nucleophile methyl or 1o alkyl halide,
KOH in aprotic solvent, good nucleophile 2o alkyl halide Now how
are the kinetics influenced if the reaction has both mechanisms
occurring at the same time? These ar