The rhodium-catalyzed addition reaction of arylboronic acids to b-aryloxyacrylates gives 3,3-diarylpropanoates in good yields. The double arylation reaction proceeds via the intermediate cinnamates generated by b-oxygen elimination.
A convenient method including 2 different Au salts is presented for the oxidative homo-coupling of arylboronic acids to give symmetrical biaryls in low to good yields. The process can be extended to related substrates such as arylboronic esters, arylborates and alkenylboronic acids. -(MATSUDA*, T.; ASAI, T.; SHIOSE, S.; KATO, K.; Tetrahedron Lett. 52 (2011) 37, 4779-4781, http://dx.
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