反应详情

温度

20 °C

To a solution of 3,4-dihydroxy-5-nitrobenzaldehyde (7.6 g) and 3,5-heptanedione (8.0 g) in 50 ml of 2-propanol was added thionyl cloride (3.5 ml) with stirring at 20° C. Ether (60 ml) was added and the solution was filtered and allowed to stand overnight. The resulting crystal were filtered. Yield 1.2 g, mp 133°-135° C.

1. filtrationthe solution was filtered
2. filtrationThe resulting crystal were filtered