1: 50 percent / H2O / diethyl ether / Irradiation 2: benzene / Heating 3: diborane / tetrahydrofuran View Scheme

4-toluenesulfonyl azide; triethylamine in acetonitrile 1.) 0 deg C, 1 h, 2.) RT, 2 h;

1: 95 percent / 40 aq. percent NaOH, trimethylbenzylammonium chloride / benzene / 17 h / Heating 2: 75 percent / H2 / 10 percent Pd-C / ethanol 3: 72 percent / triethylamine / benzene / 3 h 4: NaOEt / ethanol / 20 h / Heating 5: H2O; acetonitrile / 2 h / Heating 6: 66 percent / triethylamine, toluene-p-sulphonyl azide / acetonitrile / 1.) 0 deg C, 1 h, 2.) RT, 2 h View Scheme

1: 95 percent / 40 aq. percent NaOH, trimethylbenzylammonium chloride / benzene / 17 h / Heating 2: 75 percent / H2 / 10 percent Pd-C / ethanol 3: 72 percent / triethylamine / benzene / 3 h 4: NaOEt / ethanol / 20 h / Heating 5: H2O; acetonitrile / 2 h / Heating 6: 66 percent / triethylamine, toluene-p-sulphonyl azide / acetonitrile / 1.) 0 deg C, 1 h, 2.) RT, 2 h View Scheme

1: 75 percent / H2 / 10 percent Pd-C / ethanol 2: 72 percent / triethylamine / benzene / 3 h 3: NaOEt / ethanol / 20 h / Heating 4: H2O; acetonitrile / 2 h / Heating 5: 66 percent / triethylamine, toluene-p-sulphonyl azide / acetonitrile / 1.) 0 deg C, 1 h, 2.) RT, 2 h View Scheme

1: H2O; acetonitrile / 2 h / Heating 2: 66 percent / triethylamine, toluene-p-sulphonyl azide / acetonitrile / 1.) 0 deg C, 1 h, 2.) RT, 2 h View Scheme

1: NaOEt / ethanol / 20 h / Heating 2: H2O; acetonitrile / 2 h / Heating 3: 66 percent / triethylamine, toluene-p-sulphonyl azide / acetonitrile / 1.) 0 deg C, 1 h, 2.) RT, 2 h View Scheme

1: 72 percent / triethylamine / benzene / 3 h 2: NaOEt / ethanol / 20 h / Heating 3: H2O; acetonitrile / 2 h / Heating 4: 66 percent / triethylamine, toluene-p-sulphonyl azide / acetonitrile / 1.) 0 deg C, 1 h, 2.) RT, 2 h View Scheme