Aryl(fluoro)silacyclobutanes and aryl(chloro)silacyclobutanes have been found to undergo cross-coupling reactions with aryl iodides. The rate of reaction and extent of homocoupling were dramatically affected by the addition of ligands for the palladium catalyst. With ( t -Bu) 3 P a wide range of electronically and structurally diverse unsymmetrical biaryls have been prepared in good to excellent yields.
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Denmark et al. (1999) studied this question.