12. Solving a chemistry problem

32a) Treat 1,3-butanediol with phosphorus pentachloride (2 mol). Name the resulting product and act on it with a silver salt of propionic acid. Write the reaction of the interaction of the obtained substance with an aqueous solution of alkali.
b) Act on 4-methyl-1-pentine with water in the presence of a mercury salt (Kucherov´s reaction). Name the resulting connection and enter into interaction:
1) with HCN;
2) with hydroxylamine;
3) with sodium hydrosulfite;
4) with a strong oxidizing agent (name the products).