potassium hydroxide 24 h;

sodium hydride; potassium carbonate in toluene T=110°C; 0.5 h;

sodium hydride; potassium carbonate in toluene T=100°C; 2 h;

1: 1.) MeMgBr / 1.) Et2O, from 0 deg C to RT, 2.) reflux, 1.5 h 2: 58 percent / K2CO3 / dimethylformamide / 24 h / Heating View Scheme

1: 1.) MeMgBr / 1.) Et2O, from 0 deg C to RT, 2.) reflux, 1.5 h 2: 58 percent / K2CO3 / dimethylformamide / 24 h / Heating View Scheme

1: [{(η5-C5Me5)RhCl}2(μ-Cl)2]; silver hexafluoroantimonate; copper diacetate; silver carbonate / 1,4-dioxane / 24 h / 110 °C / |Inert atmosphere 2: potassium hydroxide / tetrahydrofuran; ethanol / |Reflux 3: methylmagnesium bromide / diethyl ether / 1.5 h / 0 - 20 °C / |Reflux 4: potassium hydroxide / 24 h View Scheme

1: [{(η5-C5Me5)RhCl}2(μ-Cl)2]; silver hexafluoroantimonate; copper diacetate; silver carbonate / 1,4-dioxane / 1 h / 110 °C / |Schlenk technique; |Inert atmosphere 2: potassium hydroxide / tetrahydrofuran; ethanol / |Reflux 3: methylmagnesium bromide / diethyl ether / 1.5 h / 0 - 20 °C / |Reflux 4: potassium hydroxide / 24 h View Scheme

1: potassium hydroxide / tetrahydrofuran; ethanol / |Reflux 2: methylmagnesium bromide / diethyl ether / 1.5 h / 0 - 20 °C / |Reflux 3: potassium hydroxide / 24 h View Scheme

1: [{(η5-C5Me5)RhCl}2(μ-Cl)2]; silver hexafluoroantimonate; copper diacetate; silver carbonate / 1,4-dioxane / 12 h / 110 °C / |Schlenk technique; |Inert atmosphere 2: potassium hydroxide / tetrahydrofuran; ethanol / |Reflux 3: methylmagnesium bromide / diethyl ether / 1.5 h / 0 - 20 °C / |Reflux 4: potassium hydroxide / 24 h View Scheme

1: methylmagnesium bromide / diethyl ether / 1.5 h / 0 - 20 °C / |Reflux 2: potassium hydroxide / 24 h View Scheme