From only commercially available reagents a wide array of Suzuki cross-couplings of aryl chlorides with arylboronic acids can be effected in excellent yield [Eq. (a)]. This development provides a general solution to a long-standing limitation of this extremely powerful process-the poor reactivity of inexpensive and readily accessible aryl chlorides. dba=dibenzylideneacetone.
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Littke et al. (1998) studied this question.