Acetic Acid → 2-Benzoylbenzaldehyde

Beteiligte Stoffe

Reaktionsschritte

A mixture of 1 g. of selenium dioxide and 1 g. of 2-hydroxymethylbenzhydrol in 5 ml. of acetic acid was refluxed for 41/2 hours. The solution was cooled, filtered from selenium and the filtrate was poured into ice water and made alkaline with sodium hydroxide. Extraction with ether gave a yellow oil to which petroleum ether was added. White prisms were obtained which melted at 64°-67°. Ultraviolet maximum (2-propanol) at 226/7 mμ (ε = 15,750) and 251/2 mμ (ε = 18,500), inflexion at 294 mμ (ε = 2600); infrared absorption (CHCl3) at 1665 cm-1 and 1705 cm-1

Herkunft & Nachweise