Which of the following is the product of the following reaction?
We’re being asked to determine the product of the given reaction.
Recall that alcohols are converted to alkenes via POCl3 dehydration, which is carried out using POCl3 in pyridine and occurs in two steps:
(1) nucleophilic attack + deprotonation – the –OH group attacks POCl3 via SN2. The intermediate is immediately deprotonated by pyridine, which is a base.
(2) E2 β-elimination – pyridine removes a β-hydrogen via E2