2: NaI 3: 1.) catecholborane, 2.) NaI, Chloramine-T View Scheme

1: NaI 2: 1.) catecholborane, 2.) NaI, Chloramine-T View Scheme

1: 70 percent / 1,3-diaminopropane, sodamide / 2 h / 80 °C 2: 83 percent / pyridine / 24 h / 10 °C 3: 80 percent / NaI / butan-2-one / 18 h / Heating 4: 1.) catecholborane, 2.) NaI, chloramine-T / 1.) 55 deg C, 6 h, 2.) THF, water, 0 deg C, 15 min View Scheme

chloramine-T; sodium iodide; benzo[1,3,2]dioxaborole 1.) 55 deg C, 6 h, 2.) THF, water, 0 deg C, 15 min; Yield given. Multistep reaction;