1: KF; n-Bu4NCl; K2CO3 / bis(dibenzylideneacetone)palladium / toluene; dimethylformamide; H2O / 70 °C 2: 85 percent / BCl3; n-Bu4NI / CH2Cl2 / 6 h / 0 °C View Scheme

tetracarbonylbis(μ-chloro)dirhodium(I) in toluene T=120°C; 48 h; Inert atmosphere; optical yield given as percent destereospecific reaction;

tetracarbonylbis(μ-chloro)dirhodium(I) in toluene T=120°C; 24 h; Inert atmosphere; optical yield given as percent destereospecific reaction;