Water → Acetic acid, ((4-(3-furanylcarbonyl)-1-naphthalenyl)oxy)-

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[C:1]1([O:11][CH2:12][C:13]([O:15]CC)=[O:14])[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.[C:18](=[O:21])([O-])[O-].[K+].[K+].[OH2:24]>C(O)C>[O:24]1[CH:3]=[CH:2][C:1]([C:18]([C:4]2[C:5]3[C:10](=[CH:9][CH:8]=[CH:7][CH:6]=3)[C:1]([O:11][CH2:12][C:13]([OH:15])=[O:14])=[CH:2][CH:3]=2)=[O:21])=[CH:10]1

참가 물질

실험 절차

15 g of the ester obtained according to (a) are dissolved in 300 ml ethanol; after addition of 7.6 g potassium carbonate in solution in 25 ml water, the mixture is refluxed for 17 hours and the alcohol removed under reduced pressure. The residue is purified by dissolution in water; the final product is extracted from the aqueous phase after acidification. 12 g of the acid which, after recrystallisation from dichloroethane, melts at 177° C. are obtained.