AuNTf2(SPhos); water in methanol T=20°C; Inert atmosphere;

1: tert-butyldiphenyl(prop-2-ynyloxy)silane With n-butyllithium in tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide; hexanes T=-45°C; 0.166667 h; Inert atmosphere; 2: oxirane in tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide; hexanes T=-45 - 20°C; Inert atmosphere;

AuNTf2(SPhos); water in methanol T=20°C; Inert atmosphere;

1H-imidazole in N,N-dimethyl-formamide T=20°C; 5 h;