Which of the following reaction mechanisms would you expect to dominate from the reaction and conditions shown below?

Question

Quizplus · Accepted Answer

The presence of a strong base (KOt-Bu) and a good leaving group (iodide) suggests that an elimination reaction is likely to occur. Both E1 and E2 mechanisms are possible, but since the substrate is a primary alkyl halide, the E2 mechanism will dominate over the E1 mechanism. Therefore, the best choice is D (E2).

Which of the Following Reaction Mechanisms Would You Expect to Dominate