Halogen Derivatives

Question 1

What are the reagents and conditions for forming RX from ROH?

Answer 1

1. HX (g) OR NaX with conc. H2SO4, heat (for both)
2. PX3 (l or s), heat (X = Cl, Br, I)
3. PCl5 (s)
4. SOCl2 in pyridine, heat

Question 2

State the products of the reaction between ROH and PI3 (phosphorus triiodide) + heat.

Answer 2

R-I and H3PO3 (phosphoric acid)

Question 3

Which mechanism has the nucleophile in the overall rate equation?

Answer 3

Sn2 (one-step mechanism)

Question 4

What are the products of the reaction between ROH and PCl5?

Answer 4

R-Cl, POCl3, and HCl

Question 5

What are the products of the reaction between ROH and SOCl2 in pyridine, heat?

Answer 5

R-Cl, SO2, HCl (g) — white fumes