Abstract
AbstractThe amino moiety of an aminopyrimidinyl phosphane allows rapid functionalization of the ligand with a silylated side chain containing a urea linker for catalyst heterogenization. The urea group causes the resulting ligand to undergo spontaneous CH activation at the pyrimidinyl site when reacted with (C6H5CN)2PdCl2 in CH2Cl2. Grafting of the resulting zwitterionic palladacycle complex onto siliceous supports leads to highly active hetereogeneous catalysts for the Suzuki–Miyaura coupling. Leaching tests proved that the catalysts obtained this way are truly heterogeneous.
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