2008

2008.41.fm Page 93 Monday, September 8, 2008 9:22 AM

Polyphenyl derivativesQ 0700 Biphenylene-Substituted Ruthenocenylphosphine for Suzuki—Miyaura Cou-

pling of Aryl Chlorides. — The catalyst is designed for the coupling reaction of aryl chlorides with arylboronic acids. The reaction in the presence of K3PO4·H2O affords a variety of biaryls. For the preparation of tetra-ortho-substituted biaryls (VI) the change to the anhydrous K3PO4 and higher loading of the catalyst proves to be effective. — (HOSHI*, T.; NAKAZAWA, T.; SAITOH, I.; MORI, A.; SUZUKI, T.; SAKAI, J.-I.; HAGIWARA, H.; Org. Lett. 10 (2008) 10, 2063-2066; Fac. Eng., Niigata Univ., Ikarashi, Niigata 950-21, Japan; Eng.) — R. Steudel

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