(η5-C5Me5)Ru(μ-H)4Ru(η5-C5Me5) in 1,3,5-trimethyl-benzene T=160°C; 6 h;

bis-triphenylphosphine-palladium(II) chloride; triphenylphosphine in xylene Stille cross-coupling reaction; 12 h; Heating;

T=200 - 220°C; 90 h; Sealed tubeInert atmosphereSchlenk technique;

tris-(dibenzylideneacetone)dipalladium(0); 1,3-bis-(diphenylphosphino)propane; sodium t-butanolate in deuterated toluene T=80°C; Buchwald-Hartwig Coupling; 36 h; Schlenk techniqueInert atmosphere;

1: acetic acid; acetyl chloride / 4 h / 100 °C / |Inert atmosphere; |Schlenk technique 2: trichlorophosphate / chloroform / 19 h / |Inert atmosphere; |Reflux; |Schlenk technique 3: 90 h / 200 - 220 °C / |Sealed tube; |Inert atmosphere; |Schlenk technique View Scheme

1: acetic acid; dihydrogen peroxide / 19 h / 75 °C / |Inert atmosphere; |Schlenk technique 2: sulfuric acid; nitric acid / 4 h / 95 °C / |Inert atmosphere; |Schlenk technique 3: acetic acid; acetyl chloride / 4 h / 100 °C / |Inert atmosphere; |Schlenk technique 4: trichlorophosphate / chloroform / 19 h / |Inert atmosphere; |Reflux; |Schlenk technique 5: 90 h / 200 - 220 °C / |Sealed tube; |Inert atmosphere; |Schlenk technique View Scheme

1: sulfuric acid; nitric acid / 4 h / 95 °C / |Inert atmosphere; |Schlenk technique 2: acetic acid; acetyl chloride / 4 h / 100 °C / |Inert atmosphere; |Schlenk technique 3: trichlorophosphate / chloroform / 19 h / |Inert atmosphere; |Reflux; |Schlenk technique 4: 90 h / 200 - 220 °C / |Sealed tube; |Inert atmosphere; |Schlenk technique View Scheme