2.) 90 deg C, 133 Pa; Multistep reaction;

hydrogenchloride; sodium nitrite anschliessend erwaermen;

sodium tetrahydroborate; nickel dichloride in tetrahydrofuran; methanol 1 h; Ambient temperature;

hydrazine; palladium on activated charcoal in ethanol 0.5 h; Heating;

dicyclohexyl(2',4',6'-triisopropyl-5-methoxy-3,4,6-trimethyl-[1,1'-biphenyl]-2-yl)phosphine; C50H70NO4PPdS; C50H70NO4PPdS; dicyclohexyl(2',4',6'-triisopropyl-4-methoxy-3,5,6-trimethyl-[1,1'-biphenyl]-2-yl)phosphine; ammonia; sodium t-butanolate in 1,4-dioxane T=80°C; 24 h; Inert atmosphere;

sodium tetrahydroborate; nickel dichloride in tetrahydrofuran; methanol T=0°C; 0.25 h;

hydrogenchloride

benzophenone; potassium carbonate in water; acetonitrile 2 h; Irradiation;