Identify the electrophile in the following SN2 reaction. A B C : Br. H .H CH3 I II CH3 :Br: III Н. H :S: IV CH3 I = CH3 III = D IV

Which reaction(s) would occur in the reaction below (substitution, elimination, both, or neither)? Br HO- DMSO O a. SN1 O b.SN2 OC. SN1 & E1 С. O d.SN2 & E2 O e. E1 O f. E2 O g. No reaction

Rank the reactivity of the following alkyl halides to undergo substitution reactions.

Name the following structure CI 1111 A. (45)-4-Chloro-4-methyl-2-hexyne B. (35)-3-Chloro-3-methyl-4-heptyne C. (3R)-3-Chloro-3-methyl-4-hexyne D. (4R)-4-Chloro-4-methyl-2-hexyne

Rank the compounds by DECREASING reactivity towards nitration with HNO3/ H2SO4 (most reactive on the left). NO2 CH3 II III IV O A. V>V>I> || > || O B. V>I> III > || > IV oCV> || >1> V> I| O D. I > V> > || > IV O E. II > V >1> [IV >| Moving to another question will save this response. Co search

Which SN2 reaction will occur most rapidly? (Assume the concentrations and temperatures are all the same.) * CH;0 + ^CI CH3 + CI- CH, B CH,0 + CH + F CH,O + CH, CH,O Br Br D

.draw structures of reactions' products

6 What product(s) would you expect to obtain from the following SN2 reaction? H H. CH;ONa ? CH3 Br CH;OH H H OCH3 CH30 ČH3 OCH3 CH3 H Br I II III || An equimolar mixture of I and II II O I, Il and III

Which starting material produces the two products shown after ozonolysis and a reductive workup? 1. O3 2. DMS C. А. D. В. A.

1. Br2 Br "Br CH3 Ethanol Ph. -CH3 KCI H₂O 2. H Ph KOH Ph- Ph. H H e = Electrophilic addition h = SN1 Nucleophilic substitution i = SN2 Nucleophilic substitution - j = Electrophilic aromatic substitution a = Proton transfer b = Lewis acid/base C = Radical chain substitution d = Radical chain addition f = E1 Elimination g E2 Elimination = Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - j for your answers. 1. 2.8