(a) Draw a curved-arrow mechanism for the reduction of pyridine-N-oxide by ;PCl3. (Hint
Chapter 26, Problem 26.12(choose chapter or problem)
(a) Draw a curved-arrow mechanism for the reduction of pyridine-N-oxide by ;PCl3. (Hint: In the first step, the oxygen of the N-oxide reacts as a nucleophilic center with the phosphorus as an electrophilic center. Remember that phosphorus can expand its octet.) (b) This is an oxidationreduction reaction. What is oxidized and what is reduced? How many electrons are involved in this redox reaction?
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