Oxalic Acid → HCID 20222015, compound

Participants

Reaction Steps

A mixture of 2-[3-(2,4-dichlorophenyl)but-3-en-1-yl]-1,3-dioxane (13.5 g) and oxalic acid (8.0 g) in water (100 ml) was heated in a flask fitted with a steam inlet and an anti-splash still head and condenser. The distillate, collected until almost no immiscible oily globules remained in the reaction flask, was extracted with diethyl ether. The extracts were washed with aqueous sodium bicarbonate and aqueous sodium chloride, the dried over magnesium sulphate and concentrated under reduced pressure to give 4-(2,4-dichlorophenyl)pent-4-enal (9.21 g, 86%), containing a trace of the reactant, as a pale yellow oil, 1H nmr (CDCl3): δ9.84 (1H, t J 2 Hz, CHO).

Provenance & Evidence