Journal
JOURNAL OF CATALYSIS
Volume 206, Issue 2, Pages 272-280Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/jcat.2001.3471
Keywords
rhodium complex; oxidative arylation; homogeneous catalysis; CH bond activation; crystal structure
Categories
Ask authors/readers for more resources
Various rhodium complexes were examined for oxidative arylation of ethylene with benzene to directly produce styrene. Using Rh(ppy)(2)(OAc) (1) (ppyH = 2-phenylpyridine), the reaction of benzene with ethylene gives styrene and vinyl acetate in 77 and 23% selectivities, respectively, in contrast to the selectivities using Pd(OAc)(2), which are 47% styrene and 53% vinyl acetate. The observation that complex 1 is an active catalyst for both styrene formation and H-D exchange between CH3CO2D and C6H6 suggests that styrene formation involves a Rh-mediated, benzene CH bond activation process. The crystal structures of complex 1 and Rh(PPY)(2) (acac-O,O') (2) (acac = acetylacetonato) are also reported. Rh(acac)(CO)(2) also works as catalyst for styrene formation by addition of acacH and O-2 without any oxidizing agent, such as Cu salt. In this system, vinyl acetate is not formed at all in spite of the presence of acetic acid. (C) 2002 Elsevier Science (USA).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available