| Summary: | The research of this thesis is focused on developing Suzuki cross-coupling reactions of various onium salts using the catalytic system Ni complex/trans-N,N'-dimethyl-1,2- cyklohexanediamine. As an expansion in the catalysis of nickel compounds, we have established that the catalytic system Ni(cod)2/trans-N,N'-dimethyl-1,2-cyklohexanediamine can affect Suzuki reactions of tetramethylenesulfonium salts with boronic acid, which leads to cleavage of C-S and formation of new C-C bonds under relatively mild reaction conditions. This explains the unique reactivity and biomimetic behavior of a nickel catalyst to activate the C-S bond. Key words: onium salts, Suzuki coupling, nickel complexes
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