1: With niobium pentaiodide in dichloromethane; chloroform-d8 T=20°C; 48 h; Inert atmosphere; 2: With water in dichloromethane; chloroform-d8 Inert atmosphere;
1: With N-ethyl-N,N-diisopropylamine in dichloromethane T=20°C; 2.5 h; Inert atmosphere; 2: With trimethylsilyl trifluoromethanesulfonate in acetonitrile T=0 - 20°C;
