toluene-4-sulfonic acid in ethanol T=80°C; 24 h; Inert atmosphere;

1: n-butyl-magnesium chloride; 2-adamantane-2,3-[3H]-diaziridine in diethyl ether T=0°C; 2 h; Inert atmosphere; 2: acetylacetone With toluene-4-sulfonic acid in ethanol T=80°C; 24 h; Inert atmosphere;

1,4-dioxane; sodium amide