A catalytic β-selective addition of amines to styrenes proceeded in the presence of cationic Ru complexes combined with diphosphine ligands. In the reaction of α-methylstyrene, an enantioselective addition was achieved by using xylylBINAP.
Cyclodehydration of various a-aryloxy ketones proceeded to give various multisubstituted benzofurans by using an Ir(III) catalyst, which was prepared from [Cp*IrCl 2 ] 2 , AgSbF 6 , and Cu(OAc) 2 . The use of the cationic iridium complex with a carboxylate salt realized the efficient transformation at ambient temperature.
Ru-catalyzed S(N)Ar reaction of non-activated fluoroarenes with secondary amines proceeded through eta(6)-arene complexes to give aminated products in up to 79% yield.
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