反应详情

温度

90 °C

A mixture of methyl 3-(4-chloromethyl-5-methyl-1,3-oxazol-2-yl)benzoate (3.0 g), potassium carbonate (1.42 g), vanillin (1.57 g) and N,N-dimethylformamide (50 mL) was stirred at 90° C. for 2 hrs. Water was poured into the reaction mixture, and the precipitated crystals were collected by filtration to give methyl 3-{4-[(4-formyl-2-methoxyphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate as colorless crystals (3.76 g, 87%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 168-169° C.

1. filtrationthe precipitated crystals were collected by filtration