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2005
Polyphenylalkene derivatives
Q 0740
Suzuki and Heck Coupling Reactions Mediated by Palladium Complexes Bearing
Diphosphines. — Ten aryl halides of varying electron density are
27- 102 trans-Spanning
examined in Heck reactions with styrene and Suzuki coupling reactions with phenylboronic acid using terphenyl-based diphosphine palladium complexes (I) as catalysts.
In Heck reactions, complexes (Ia) and (Ib) are found to be effective catalysts, whereas
complex (Ic) is proved to be ineffective. Only (E)-alkenes are formed in the presence
of complex (Ib), whereas (E)/(Z)-mixtures are obtained when complex (Ia) is employed. All complexes (I) are found to be effective catalysts in Suzuki coupling reactions. — (SMITH, R. C.; BODNER, C. R.; EARL, M. J.; SEARS, N. C.; HILL, N. E.;
BISHOP, L. M.; SIZEMORE, N.; HEHEMANN, D. T.; BOHN, J. J.;
PROTASIEWICZ*, J. D.; J. Organomet. Chem. 690 (2005) 2, 477-481; Dep. Chem.,
Case West. Reserve Univ., Cleveland, OH 44106, USA; Eng.) — Klein
2005
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