1: With bis(η3-allyl-μ-chloropalladium(II)); cesium hydroxide monohydrate; tri-cyclo-hexyl-phosphine in anhydrous xylene 24 h; RefluxInert atmosphere; 2: With hydrogenchloride; sodium cyanoborohydride in ethanol; water T=25°C; 2 h; 3: With hydrogenchloride in ethanol; water T=25°C; 2 h;

hydrogenchloride in methanol; diethyl ether T=20°C; 2 h; Inert atmosphere;