HYDROGENATION OF 1,3-BUTADIENES WITH A RHODIUM COMPLEX-LAYERED SILICATE INTERCALATION CATALYST

Article abstract of DOI:10.1016/S0022-328X(00)80992-4

Rh(NBD)(dppe)⁺ (NBD=norbornadiene, dppe=1,2-bis(diphenylphosphino)ethane) intercalated in hectorite, a swelling layered silicate, catalyzes the overall 1,2 and 1,4 addition of hydrogen to 1,3-butadiene, isoprene,and 2,3-dimethyl-1,3-butadiene at rates which range from <10^-5 to 0.83, relative to the homogeneous catalyst.The yields of 1,2 addition products are 1.5 to 2.3 times higher than those obtained under homogeneous reaction conditions.The intercalation effects depend in part on the extent to which the silicate interlayers are swelled by solvent.