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1. Consider the reaction of 1-methylcyclopentene with Cl2 and H2O to answer a-e.

ID: 609123 • Letter: 1

Question

1. Consider the reaction of 1-methylcyclopentene with Cl2 and H2O to answer a-e. a. This reaction is an example of (Electrophilic substitution, Electrophilic addition, Elimination, Carbocation rearrangement, or Nucleophilic addition) b. It occurs with (anti, syn, or no) stereoselectivity. c. The observed stereoselectivity can be explained on the basis of formation of (planar carbocation intermediate, oxonium ion intermediate, 4-membered cyclic transition state, or bridged chloronium ion intermediate) during the course of this reaction. d. The electrophile in the first step, formation of the first intermediate, is ___________. e. Provide the names or structures of the two nucleophiles in this reaction. __________________________ and ________________________

Explanation / Answer

a) Electrophilic Addition b) Anti c) Planar Carbocation Intermediate d) Water e) 1-methylcyclopentene and water