Arrange the following compounds in order of decreasing reactivity in electrophilic substitution:

Question

Quizplus · Accepted Answer

The order of decreasing reactivity in electrophilic substitution is determined by the ability of the compound to donate electrons to the incoming electrophile. Compounds that can donate electrons through resonance stabilization or inductive effects are more reactive. In this case, compound II has a strong electron-donating group (amino) which greatly increases its reactivity. Compound V has a weaker electron-donating group (methyl) which makes it less reactive than II, but more reactive than the other compounds. Compounds I, III, and IV all have similar levels of electron donation, but the presence of a halogen in compound III slightly decreases its reactivity compared to I and IV. Thus, the correct order is II > V > III > I > IV.

Arrange the Following Compounds in Order of Decreasing Reactivity in Electrophilic