dirhodium tetraacetate in dichloromethane T=40°C; 2 h;

sodium perchlorate; water in 1,4-dioxane T=20°C; pH=7.23; 0.0833333 h;

trifluoroacetic acid in dichloromethane T=-20°C; 1.16667 h;

2-(tert-butyl)-6-chloropyridine 1-oxide; C45H57AuF6NO9PS2 in chloroform T=60°C; 0.5 h;

1.1: n-BuLi / tetrahydrofuran; hexane; diethyl ether / 0.5 h / -78 °C 1.2: tetrahydrofuran; hexane; diethyl ether / -78 °C 2.1: 41 percent / H2O / 20 °C View Scheme

rhodium (II) acetate in benzene 0.333333 h; Ambient temperature;

1: NaBH4 / methanol / 2 h / Heating 2: 6.8 g / p-toluenesulfonic acid monohydrate / tetrahydrofuran / 1 h / Heating 3: N-bromoacetamide / tetrahydrofuran; H2O / 0.5 h / 20 °C 4: 90 percent / KOH / tetrahydrofuran / 1 h / 20 °C 5: NaClO4; H2O / dioxane / 0.08 h / 20 °C / pH 7.23 View Scheme

1: 6.8 g / p-toluenesulfonic acid monohydrate / tetrahydrofuran / 1 h / Heating 2: N-bromoacetamide / tetrahydrofuran; H2O / 0.5 h / 20 °C 3: 90 percent / KOH / tetrahydrofuran / 1 h / 20 °C 4: NaClO4; H2O / dioxane / 0.08 h / 20 °C / pH 7.23 View Scheme

1: N-bromoacetamide / tetrahydrofuran; H2O / 0.5 h / 20 °C 2: 90 percent / KOH / tetrahydrofuran / 1 h / 20 °C 3: NaClO4; H2O / dioxane / 0.08 h / 20 °C / pH 7.23 View Scheme

1: potassium carbonate / N,N-dimethyl-formamide / 4 h / 55 °C / Inert atmosphere 2: chromium(VI) oxide; acetic acid / water / 4.5 h / 20 °C / Cooling with ice 3: sodium tetrahydroborate; methanol / 2 h / Reflux 4: toluene-4-sulfonic acid / tetrahydrofuran / 1 h / Reflux 5: 1,3-dibromo-5,5-dimethyl-hydantoin / tetrahydrofuran / 0.5 h / 20 °C 6: potassium hydroxide / tetrahydrofuran / 1 h / 20 °C 7: indium(III) chloride / tetrahydrofuran / 0.75 h / 25 °C / Inert atmosphere View Scheme