Question

Na 0 1. +NaBr benzene, reflux Br 2. a = Proton transfer b Lewis acid base c Radical chain substitution f-E1 Elimination d = Radical chain addition e-Electrophilic addition g = E2 Elimination h-Sy1 Nucleophilic substitution i SN2 Nucleophilic substitution Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - i for your answers.

Answer 1

1. Ethanol KaH2 g - E2 elimination CI он 2. NaOH NaC CI SN2 nucleophilic substitution a Proton transfer b-Lewis acid base c-Radical chain substution f-E1 Elimination d- Radical chain addition e-Electrophilic addition g-E h-Syl Nucleophilic substitution i- SN2 Nucleophilic substitution Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a i for your answers. 1. g -E2 elimination 2-i = SN2 nucleophilic substitution

1. DMSO Cl gE2 elimination major product 2. Br* P(n-Bu) P(n-Bu) Br SN2 substitution a - Proton transfer b Lewis acid base c Radical chain substitution f E1 Elimination d-Radical chain addition g-E2 Elimination e Electrophilic addition h- Sy1 Nucleophilic substitution i-SN2 Nucleophilic substitution Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - i for your answers. gE2emination 2. SN2 substitution