1.1: copper diacetate / N,N-dimethyl-formamide / 120 °C 2.1: silver(I) acetate; palladium dichloride; 2,2,2-trimethylacetic acid / 12 h / 120 °C 3.1: water; potassium hydroxide / methanol / 3 h / 60 °C 3.2: 0 °C / pH 2 4.1: acetic acid; silver carbonate / dimethyl sulfoxide / 24 h / 120 °C View Scheme

1.1: copper diacetate / N,N-dimethyl-formamide / 120 °C 2.1: silver(I) acetate; palladium dichloride; 2,2,2-trimethylacetic acid / 12 h / 120 °C 3.1: lithium aluminium tetrahydride / tetrahydrofuran / 0.17 h / 0 °C 3.2: 0 °C View Scheme

1: copper diacetate / N,N-dimethyl-formamide / 120 °C 2: silver(I) acetate; palladium diacetate; 2,2,2-trimethylacetic acid / 12 h / 120 °C View Scheme

1: copper diacetate / N,N-dimethyl-formamide / 120 °C 2: silver(I) acetate; palladium dichloride; 2,2,2-trimethylacetic acid / 12 h / 120 °C View Scheme

1: CuBr; DBU; HMTA / CH2Cl2 2: K2CO3 / methanol; H2O View Scheme

1: CuBr; DBU; HMTA / CH2Cl2 2: K2CO3 / methanol; H2O 3: lithium borohydride; MeOH / tetrahydrofuran 4: Dess-Martin periodinane / CH2Cl2 View Scheme

N-bromosuccinmide; meta-chloroperoxybenzoic acid in benzene T=80°C; 2 h;

tert.-butylhydroperoxide; potassium carbonate; copper dichloride in acetonitrile

1: CuBr; DBU; HMTA / CH2Cl2 2: K2CO3 / methanol; H2O 3: lithium borohydride; MeOH / tetrahydrofuran View Scheme