Palladium-catalysed cross-coupling reaction of ultra-stabilised 2-aryl-1,3-dihydro-1<i>H-</i>benzo[<i>d</i>]1,3,2-diazaborole compounds with aryl bromides: A direct protocol for the preparation of unsymmetrical biaryls
作者:Siphamandla Sithebe、Ross S Robinson
DOI:10.3762/bjoc.10.109
日期:——
are versatile coupling partners in metal-catalysed cross-couplingreactions. On the other hand, their nitrogen analogues, namely, 1,3,2-benzodiazaborole-type compounds have been studied extensively for their intriguing absorption and fluorescence characteristics. Here we describe the first palladium-catalysed Suzuki-Miyaura cross-couplingreaction of easily accessible and ultra-stabilised 2-aryl-1
Readily available and inexpensive NiBr2 has been used for the first time to accomplish the ligand-free and activator-less catalytic Suzuki coupling of a variety of arylhalides (ca. 60 examples) with several arylboronic acids in high yields under ambient conditions with good functional group tolerance.