ammonium cerium(IV) nitrate in chloroform; water; acetonitrile 0.25 h; Ambient temperature;

1: 87 percent / TFAA, TFA / 12 h / 60 °C 2: 95 percent / Et3SiH / trifluoroacetic acid / 6 h / 25 °C View Scheme

1: 87 percent / TFAA, TFA / 12 h / 60 °C 2: 95 percent / Et3SiH / trifluoroacetic acid / 6 h / 25 °C View Scheme

1: 1.) Na2S2O4, n-tetrabutylammonium bromide, 2.) KOH / 1.) aq. THF 2: 87 percent / TFAA, TFA / 12 h / 60 °C 3: 95 percent / Et3SiH / trifluoroacetic acid / 6 h / 25 °C View Scheme

1: tetrahydrofuran / 17 h / -10 - 20 °C / |Inert atmosphere 2: 4-methylmorpholine N-oxide; tetrapropylammonium perruthennate / dichloromethane / 2 h / |Molecular sieve; |Inert atmosphere 3: boron trifluoride diethyl etherate; triethylsilane / 80 - 95 °C / |Reflux View Scheme

1: tetrahydrofuran / 17 h / -10 - 20 °C / |Inert atmosphere 2: 4-methylmorpholine N-oxide; tetrapropylammonium perruthennate / dichloromethane / 2 h / |Molecular sieve; |Inert atmosphere 3: boron trifluoride diethyl etherate; triethylsilane / 80 - 95 °C / |Reflux View Scheme

in acetonitrile 12 h; Irradiationother solvent; Quantum yield;

1: 81 percent / HBr / acetic acid / 9 h / 45 - 50 °C 2: 100 percent / dioxane; H2O / 10 h / Heating 3: 73 percent / aq. KOH / methanol / 22 h / Heating 4: 63 percent / PPA / 1.5 h / 60 - 70 °C 5: 1.) NBS, dibenzoyl peroxide, 2.) H2O / 1.) CCl4, reflux, 4.5 h 6: 74 percent / PCC, Celite / CH2Cl2 / 3 h / 25 °C 7: 69 percent / AlCl3 / CH2Cl2 / 4 h / 55 °C 8: 1.) Me3SiI, 2.) MeOH / 1.) CDCl3, 25 deg C, 27 h 9: p-TsOH / benzene / 5 h / Heating View Scheme