New B-substituted derivatives of m-carborane, p-carborane, and cobalt bis(1,2-dicarbollide) anion

The Pd-catalyzed cross-coupling reactions of B–I bond in m- and p-carboranes and cobalt bis(1,2-dicarbollide) anion with organomagnesium and organozinc compounds were studied. Carboranyl derivatives of furan, thiophene, indole, pyridine and quinoline were synthesized. 2-Pyridylethynyl and 3-quinolylethynyl derivatives of p-carborane were prepared by Pd-catalyzed cross-coupling reactions using corresponding alkynes or their magnesium derivatives.