1: 2,2,5-trimethyl-5-phenyl-1,3-dioxane-4,6-dione With scandium tris(trifluoromethanesulfonate) in chloroform-d1 T=50°C; 48 h; Inert atmosphere; 2: methanol Inert atmosphere;

1: 2,2,5-trimethyl-5-phenyl-1,3-dioxane-4,6-dione With scandium tris(trifluoromethanesulfonate) in chloroform-d1 T=50°C; 48 h; Inert atmosphere; 2: methanol Inert atmosphere;