反应详情

A mixture of 4-(4-chlorophenyl)pent-4-en-1-ol (5.5 g) and pyridinium dichromate (14.62 g) in dichloromethane (50 ml) was stirred at room temperature for 24 hours. The mixture was diluted with diethyl ether and the solid material was filtered off. The filtrate was washed with water, dried over magnesium sulfate, and concentrated under reduced pressure to give 4-(4-chlorophenyl)pent-4-enal (2.6 g, 48%) as a yellow oil, 1H nmr (CDCl3): 9.75 (1H, broad singlet, CHO), 1R (film): 1720 cm-1.

1. filtrationthe solid material was filtered off
2. washThe filtrate was washed with water
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated under reduced pressure