1: triethylamine / 24 h / 148 °C / |Inert atmosphere 2: pyridine hydrochloride / 1 h / 180 - 210 °C / |Inert atmosphere 3: pyridine / 6.08 h / 22 - 89 °C / |Inert atmosphere 4: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane / 100 h / 76 °C / |Inert atmosphere; |Irradiation View Scheme

1: triethylamine / 24 h / 148 °C / |Inert atmosphere 2: pyridine hydrochloride / 1 h / 180 - 210 °C / |Inert atmosphere 3: pyridine / 6.08 h / 22 - 89 °C / |Inert atmosphere 4: bromine; anhydrous lanthanum acetate / n-heptane / 6 h / 60 °C / |Irradiation View Scheme

1: triethylamine / 24 h / 148 °C / |Inert atmosphere 2: pyridine hydrochloride / 1 h / 180 - 210 °C / |Inert atmosphere 3: potassium carbonate / acetone / 3 h / 59 °C / |Inert atmosphere View Scheme

1.1: triethylamine / 24 h / 148 °C / |Inert atmosphere 2.1: pyridine hydrochloride / 1 h / 180 - 210 °C / |Inert atmosphere 3.1: potassium carbonate / acetone / 3 h / 59 °C / |Inert atmosphere 4.1: lithium diisopropyl amide / tetrahydrofuran / 1 h / -70 °C 4.2: -76 °C View Scheme

1.1: triethylamine / 24 h / 148 °C / |Inert atmosphere 2.1: pyridine hydrochloride / 1 h / 180 - 210 °C / |Inert atmosphere 3.1: potassium carbonate / acetone / 3 h / 59 °C / |Inert atmosphere 4.1: lithium hexamethyldisilazane / tetrahydrofuran / 1 h / -70 °C 4.2: 1 h / -76 °C View Scheme

1.1: triethylamine; acetic anhydride / o-xylene / 0.5 h / 20 °C 1.2: 50 h / 150 °C 2.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.75 h / -20 °C 2.2: 1.17 h / -20 - 0 °C 3.1: boron tribromide / dichloromethane / 7.33 h / 20 - 34 °C / |Inert atmosphere 4.1: ethanol / 18.17 h / 0 - 26 °C / |Inert atmosphere 5.1: di-isopropyl azodicarboxylate / tetrahydrofuran / 1.08 h / -5 - 0 °C 5.2: 18.5 h / 20 °C 6.1: triethylamine / dichloromethane / 0.17 h / 20 °C 6.2: 21 h / 20 - 30 °C View Scheme

1.1: triethylamine; acetic anhydride / o-xylene / 0.5 h / 20 °C 1.2: 50 h / 150 °C 2.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.75 h / -20 °C 2.2: 1.17 h / -20 - 0 °C 3.1: boron tribromide / dichloromethane / 7.33 h / 20 - 34 °C / |Inert atmosphere 4.1: ethanol / 18.17 h / 0 - 26 °C / |Inert atmosphere 5.1: di-isopropyl azodicarboxylate / tetrahydrofuran / 1.08 h / -5 - 0 °C 5.2: 18.5 h / 20 °C 6.1: triethylamine / dichloromethane / 0.17 h / 20 °C 6.2: 21 h / 20 - 30 °C 7.1: diisobutylaluminium hydride / dichloromethane / 2.25 h / -20 °C / |Inert atmosphere View Scheme

1.1: triethylamine; acetic anhydride / o-xylene / 0.5 h / 20 °C 1.2: 50 h / 150 °C 2.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.75 h / -20 °C 2.2: 1.17 h / -20 - 0 °C 3.1: boron tribromide / dichloromethane / 7.33 h / 20 - 34 °C / |Inert atmosphere 4.1: ethanol / 18.17 h / 0 - 26 °C / |Inert atmosphere 5.1: di-isopropyl azodicarboxylate / tetrahydrofuran / 1.08 h / -5 - 0 °C 5.2: 18.5 h / 20 °C 6.1: triethylamine / dichloromethane / 0.17 h / 20 °C 6.2: 21 h / 20 - 30 °C 7.1: diisobutylaluminium hydride / dichloromethane / 2.25 h / -20 °C / |Inert atmosphere 8.1: n-butyllithium / tetrahydrofuran; hexane / 1.33 h / -76 - -73 °C / |Inert atmosphere 8.2: 2.33 h / -73 °C / |Inert atmosphere 9.1: hydrogenchloride / water / 0.75 h / 10 - 20 °C / |Inert atmosphere View Scheme

1: triethylamine 2: potassium carbonate / methanol 3: potassium carbonate / N,N-dimethyl-formamide View Scheme

acetic anhydride; triethylamine 36 h; Reflux;