反应详情

36 g of methyl 5-formylvalerate, 90 g of water and 2 g of cation exchanger which consisted of crosslinked polystyrene containing sulfo groups were refluxed for 8.5 hours, the methanol formed being distilled off constantly. Fractional distillation under reduced pressure gave 24 g (74% of theory) of 5-formylvaleric acid.

1. additioncontaining sulfo groups
2. temperaturewere refluxed for 8.5 hours
3. distillationbeing distilled off constantly
4. distillationFractional distillation under reduced pressure