Syntheses of γ-Oxo Acids or γ-Oxo Esters by Photooxygenation of Furanic Compounds and Reduction Under Ultrasound: Application to the Synthesis of 5-Aminolevulinic Acid Hydrochloride
Syntheses of γ-Oxo Acids or γ-Oxo Esters by Photooxygenation of Furanic Compounds and Reduction Under Ultrasound: Application to the Synthesis of 5-Aminolevulinic Acid Hydrochloride
The title tricyclic compound was obtained by photo-oxygenation of bis(5-formylfurfuryl) ether, followed by a dehydration reaction. The compound appears as a trans isomer, with respect to the relative positions of the lactonic rings to the dioxane ring, which remains chair shaped. Such a trans configuration has been found previously in anemonin, where the two lactonic rings are trans with respect to the cyclobutane ring.