2,2-Dimethyl-1,3-dioxane-4,6-dione → 5-[(3-Benzylphenylamino)methylene]-2,2-dimethyl-[1,3]dioxane-4,6-dione

Beteiligte Stoffe

Reaktionsschritte

Triethyl orthoformate (10.0 mL, 60.1 mmol), Meldrum's acid (8.2 g, 57 mmol), and either 3-benzyl aniline or 4-benzyl aniline (10.0 g, 54.6 mmol) as indicated in the table below in methanol (303 mL) were combined and treated according to the method described in Part A of Example 1 to provide 5-[(3-benzylphenylamino)methylene]-2,2-dimethyl-[1,3]dioxane-4,6-dione (15.5 g) or 5-[(4-benzylphenylamino)methylene]-2,2-dimethyl-[1,3]dioxane-4,6-dione (15.2 g), respectively.

Herkunft & Nachweise