4-Formylbenzoic acid → 2-[4-(4-Carboxystyryl)phenyl]benzofuran

Participants

Reaction Steps

Proceeding in a manner similar to that described in Example 1 above, 2-(p-tolyl)benzofuran (2.08 g; 0.01 mole) was interacted with 2.25 g (0.01 mole) of the anil derivative of terephthalaldehydic acid in the presence of 6.72 g (0.06 mole) of potassium tert-butoxide in 150 ml of dimethylformamide. The resulting product was purified by sublimation to obtain 2-[4-(4-carboxystyryl)phenyl]benzofuran which melted at 348°-349°C. The wavelength of maximum excitation of this compound was 365 nm and the wavelength of maximum emission was 425 nm.

Provenance & Evidence