Method B (In Situ Method). In these experiments the catalyst was generated in situ from [(nor- CiHs) RhCl]~ z and the ditertiary phosphine (C~ HR)* PCH (C~ H~) CH? P (C~ H~)~ using a phosphorus/rhodium mole ratio of 2 2 1 and a substrate/catalyst ratio of 100: l. The hydrogenations were conducted at TO bars of hydrogen pressure in 20-mL stainless steel autoclaves at room temperature overnight. A catalyst for a typical in situ experiment was ...
