1: With tetrafluoroboric acid; sodium nitrite in water T=0 - 20°C; 12.0833 h; 2: With sodium hydrogencarbonate in water

1: With lithium diisopropyl amide in tetrahydrofuran; n-heptane; ethylbenzene T=-78°C; 2 h; 2: With iodine in tetrahydrofuran; n-heptane; ethylbenzene 4 h;