2,2-Dimethyl-1,3-dioxane-4,6-dione → 5-(((4-((4-Chlorophenyl)(thiazol-2-yl)methyl)phenyl)amino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione

Participants

Reaction Conditions

Reaction Steps

To a suspension of 4-((4-chlorophenyl)(thiazol-2-yl)methyl)aniline (220 mg, 0.731 mmol, 1 equip) in isopropanol (6 mL) was added 2,2-dimethyl-1,3-dioxane-4,6-dione (140 mg, 0.951 mmol, 1.3 equip) and triethyl orthoformate (443 mg, 2.925 mmol, 4 equip) and the resulting mixture was heated at 100° C. for 3 h. The reaction mixture was cooled to room temperature and concentrated. The residue was purified by MPLC using dichloromethane-methanol as eluent to yield 5-(((4-((4-chlorophenyl)(thiazol-2-yl)methyl)phenyl)amino)methylene)-2,2-dimethyl-1,3-dioxane-4,6-dione as a pale yellow foam. 1H NMR (400 MHz, d6-DMSO) δ 11.25 (1H, d), 8.55 (1H, d), 7.82 (1H, d), 7.69 (1H, d), 7.52 (2H, d), 7.38 (2H, d), 7.38-7.30 (4H, m), 6.19 (1H, s), 1.67 (6H, s).

Provenance & Evidence