1: 95 percent / NaN3 / H2O; acetone / 1) 0 deg C, 10 min, 2) room temp, 15 min 2: 90.5 percent / benzene / 4 h / Heating 3: H2, Pd-C / methanol; acetic acid / 2.5 h / 760 Torr View Scheme

1: 95 percent / NaN3 / H2O; acetone / 1) 0 deg C, 10 min, 2) room temp, 15 min 2: 90.5 percent / benzene / 4 h / Heating 3: H2, Pd-C / methanol; acetic acid / 2.5 h / 760 Torr 4: 89.3 percent / diethyl ether / 21 h / Irradiation View Scheme

1: 95 percent / NaN3 / H2O; acetone / 1) 0 deg C, 10 min, 2) room temp, 15 min 2: 90.5 percent / benzene / 4 h / Heating 3: H2, Pd-C / methanol; acetic acid / 2.5 h / 760 Torr 4: 2.) H2 / 1.) MgSO4, 2.) PtO2 / 1.) EtOAC, room temp, 1.5 h, 2.) C2H5OH, 6.5 h 5: 34 percent / methanol / 1.33 h / Irradiation View Scheme

1: 95 percent / NaN3 / H2O; acetone / 1) 0 deg C, 10 min, 2) room temp, 15 min 2: 90.5 percent / benzene / 4 h / Heating 3: H2, Pd-C / methanol; acetic acid / 2.5 h / 760 Torr 4: 89.3 percent / diethyl ether / 21 h / Irradiation 5: LiAlH4 / tetrahydrofuran / 4 h / Heating 6: 92 percent / NaHCO3 / CH2Cl2; H2O / 1 h View Scheme

1: 95 percent / NaN3 / H2O; acetone / 1) 0 deg C, 10 min, 2) room temp, 15 min 2: 90.5 percent / benzene / 4 h / Heating 3: H2, Pd-C / methanol; acetic acid / 2.5 h / 760 Torr 4: 89.3 percent / diethyl ether / 21 h / Irradiation 5: 77 percent / (C2H5)3N / tetrahydrofuran / 1.) room temp, 0.5 h, 2.) reflux, 0.5 h View Scheme

<b>Multi-step reaction with 4 steps<br /> </b>1: 1.) (C₂H₅)3N, 2.) 2N KOH / 1.) benzene, 33-35 deg C, 45 min, 2.) H₂O, 5 h<br />2: ethanol / 0.25 h / Ambient temperature<br />3: 70 percent / 10percent H₂SO₄ / H₂O / 1 h / Heating<br />4: oxalyl chloride / benzene / 0.33 h / 60 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: ethanol / 0.25 h / Ambient temperature<br />2: 70 percent / 10percent H₂SO₄ / H₂O / 1 h / Heating<br />3: oxalyl chloride / benzene / 0.33 h / 60 &deg;C<br /> <br /> &nbsp;