1,1'-bis-(diphenylphosphino)ferrocene; 1,1'-bis(diphenylphosphanyl)ferrocenenickel(II) chloride; potassium iodide in diethyl ether; toluene T=110°C; 15 h;

dichloro bis(acetonitrile) palladium(II); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in tetrahydrofuran T=20°C; Kumada-Corriu reaction; 14 h; Inert atmosphere;

di-μ-chloro-bis(η4-1,5-cyclooctadiene)diiridium; triphenylphosphine in 1,4-dioxane T=140°C; 72 h; Inert atmosphereSchlenk technique;

pyrrolidine; 9,10-dimethyl-9,10-dibora-9,10-dihydroanthracene in tetrahydrofuran T=60°C; Diels-Alder reaction; 20 h;

tetrachloromethane; sulfuric acid T=30 - 35°C;

Sn(2+)*H(1+)*PW12O40(3-)=SnHPW12O40 T=120°C; 0.25 h;

tetraethylammonium tetrafluoroborate in N,N-dimethyl-formamide electrochemical reduction; Yield given. Yields of byproduct given;

1.1: tris(4-methylphenyl)-phosphine; trimethylsilyl-methylmagnesium chloride; cobalt(II) dibromide / tetrahydrofuran / 0.5 h / |Inert atmosphere; |Schlenk technique; |Cooling with ice 1.2: 12 h / 40 °C / |Inert atmosphere; |Schlenk technique 2.1: water; hydrogenchloride / ethyl acetate / 0.5 h / 20 °C / |Inert atmosphere 3.1: di-μ-chloro-bis(η4-1,5-cyclooctadiene)diiridium; triphenylphosphine / 1,4-dioxane / 72 h / 140 °C / |Inert atmosphere; |Schlenk technique View Scheme

1.1: tris(4-methylphenyl)-phosphine; trimethylsilyl-methylmagnesium chloride; cobalt(II) dibromide / tetrahydrofuran / 0.5 h / |Inert atmosphere; |Schlenk technique; |Cooling with ice 1.2: 12 h / 40 °C / |Inert atmosphere; |Schlenk technique 2.1: water; hydrogenchloride / ethyl acetate / 0.5 h / 20 °C / |Inert atmosphere 3.1: di-μ-chloro-bis(η4-1,5-cyclooctadiene)diiridium; triphenylphosphine / 1,4-dioxane / 72 h / 140 °C / |Inert atmosphere; |Schlenk technique View Scheme

1: water; hydrogenchloride / ethyl acetate / 0.5 h / 20 °C / |Inert atmosphere 2: di-μ-chloro-bis(η4-1,5-cyclooctadiene)diiridium; triphenylphosphine / 1,4-dioxane / 72 h / 140 °C / |Inert atmosphere; |Schlenk technique View Scheme