Give the products expected from reaction of deuterium iodide (DI) with (a) 1,3-cycloheptadiene; (b) trans-1,3-pentadiene; (c) 2-methyl-1,3-pentadiene. In what way does the observable result of reaction of DI differ from that of reaction of HI with these same substrates [compare with Problems 49(a), 50(a), and 51(a)]? 

Data From Problem 49

What products would you expect from the electrophilic addition of each of the following reagents to 1,3-cycloheptadiene? (a) HI; (b) Br₂ in H2O; (c) IN₃; (d) H₂SO₄ in CH₃CH₂OH.