Part 5: Choose the most appropriate reagent(s) for the first step of the synthesis. Br Y reagent(s) Br H3C H A Br2, H2O B PB1'3 HBr Br2 H2S04, heat Molecular bromine in the absence of water or other source of nucleophiles can add two bromines to an alkene. Part 6 out of 8 Choose the most appropriate reagent(s) for the second step of the synthesis. Br Br2 Br reagent(s) H3C- H A 2 equivalents of NaNH2 B 1 equivalent of NaNH2 Na, NH3 NaN3 E (CH3)3COK