Question

Draw the structure of the major products for the reactions of cyclooctyne with the following:
(i) H2 / Lindlar Pd (v) excess HCl
(ii) excess H2 / Pd (vi) aq. H2SO4, HgSO4
(iii) Na / NH3 (vii) Br2
(iv) 1 equiv. HCl (viii) O3 then H2O