1: 1.) 0.75M 9-borabicyclo<3.3.1>nonane; 2.) 3N NaOH, 26percent H2O2 / 1.) THF, 0 deg C, 2-3 h; 2.) 20 deg C, 2-3 h 2: PBr3 / 1.) pyridine, hexane, 3-5 deg C, 3h; 2.) 20 deg C, 12 h 3: 1.) Mg / 2.) Li2CuCl4 / 1.) THF; 2.) 0 deg C, 3 h, 20 deg C, 2 h 4: 88 percent / potassium iodide / acetic acid / 20 h / Heating View Scheme

1: 1.) 0.75M 9-borabicyclo<3.3.1>nonane; 2.) 3N NaOH, 26percent H2O2 / 1.) THF, 0 deg C, 2-3 h; 2.) 20 deg C, 2-3 h 2: PBr3 / 1.) pyridine, hexane, 3-5 deg C, 3h; 2.) 20 deg C, 12 h 3: 79 percent / Li2CuCl4 / 1.) THF, 0 deg C, 5 h; 2.) 20 deg C, 1 h View Scheme

sodium hydroxide; 9-borabicyclo[3.3.1]nonane dimer; dihydrogen peroxide 1.) THF, 0 deg C, 2-3 h; 2.) 20 deg C, 2-3 h; Yield given. Multistep reaction;

sodium hydroxide; dihydrogen peroxide; diborane 1) diglyme, 20 deg C, 2 h, 2) 50 deg C, 2 h; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;

1: 1.) 0.75M 9-borabicyclo<3.3.1>nonane; 2.) 3N NaOH, 26percent H2O2 / 1.) THF, 0 deg C, 2-3 h; 2.) 20 deg C, 2-3 h 2: PBr3 / 1.) pyridine, hexane, 3-5 deg C, 3h; 2.) 20 deg C, 12 h 3: 1.) Mg; / 2.) Li2CuCl4 / 1.) THF; 2.) -5 deg C, 3 h, 20 deg C, 2 h 4: 95 percent / potassium iodide / acetic acid / 16 h / Heating View Scheme