Question

3 pts Predict the major product(s) of the following reaction. Select all that apply. If a reaction would yield both ortho and para products, select both answers. HNO3 H2SO4 Product NO2 ON ON NO2 А B с D B А No Reaction. The reaction would not give a product. Ос OD

Answer 1

a -CH CH₂ - cha (Hnog + Hasoa) generates electrophile Roy So the reaction is a electrophilic substitution reaction. The group is electron donating group, it donates through +I effect and hyperconjugative effect. Again electron donating group like (-chettes) is ortho and para director. electyon HNO3 + -NO2 H2SO4 or the product NO2 (minor due to para product Steric crowding) (major dostoso as there is no such Steric crow para product will Now between ortno and para product, be a major one As in the ortho product there is a strong sterra crowding between en and -NOZ But in para product no such steric crowding operates. major product i options No2 (2 electrophilic substitution reaction benzene ring acts nucleophile . Again nucleophilicity depends on the steriormente electron density. so if electron donatings substituents attached with benzene ring then electrophilie substitution will be faster and it electron withdrawing altached substituents will be she slower. substitution CF3 then H -I efect effect -OH donates electron throug&R effect je by resonance. Alkyl group donates electron thorough +I and nyperconjugation -CF3 withdraws electron by -I effect as three -Fibes are attached with the c-atom BY H - withdraws electron through -Reffect. Hence the ring is least electron dense, - BY withdraws electrons by I effect. nodrobs But I effect is less than - CF3 C-Br also donate very less of electron by +Reffect it is negligible.) amount But

- Dominance of effect Cre, order of effect strength) Resonance » Inductive C.RO effect (1) BY CF3 order of electrophilic o attack SO (+1) GR G (R) strong ) t 3 4