palladium diacetate; potassium carbonate; trifluoroacetic acid; silver(l) oxide T=140°C; Nazarov Cyclization; 24 h; Schlenk techniqueInert atmosphere;

1.1: magnesium / tetrahydrofuran / 2 h / 20 - 85 °C 1.2: 0 - 20 °C / |Inert atmosphere 2.1: pyridinium chlorochromate; triethylamine / dichloromethane / 20 °C 3.1: palladium diacetate; trifluoroacetic acid; potassium carbonate; silver(l) oxide / 24 h / 140 °C / |Schlenk technique; |Inert atmosphere View Scheme

1.1: magnesium / tetrahydrofuran / 2 h / 20 - 85 °C 1.2: 0 - 20 °C / |Inert atmosphere 2.1: pyridinium chlorochromate; triethylamine / dichloromethane / 20 °C 3.1: palladium diacetate; trifluoroacetic acid; potassium carbonate; silver(l) oxide / 24 h / 140 °C / |Schlenk technique; |Inert atmosphere View Scheme

1: pyridinium chlorochromate; triethylamine / dichloromethane / 20 °C 2: palladium diacetate; trifluoroacetic acid; potassium carbonate; silver(l) oxide / 24 h / 140 °C / |Schlenk technique; |Inert atmosphere View Scheme

1: With aluminium trichloride Friedel-Crafts acylation; 4 h; Heating; 2: With palladium diacetate; sodium carbonate in N,N-dimethyl acetamide 2.5 h; Heating;