dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine; tris-(dibenzylideneacetone)dipalladium(0); sodium t-butanolate in anhydrous xylene 36 h; Inert atmosphereReflux;

1: pyridine / dichloromethane / 2 h / |Cooling with ice; |Inert atmosphere 2: sodium t-butanolate; dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine; tris-(dibenzylideneacetone)dipalladium(0) / anhydrous xylene / 36 h / |Inert atmosphere; |Reflux View Scheme