4,6-Dioxo-10-propyl-4H,6H-benzo(1,2-b:5,4-b')dipyran-2,8-dicarboxylic acid → HCID 131712429, compound

Participants

Reaction Steps

4,6-Dioxo-10-propyl-4H,6H-benzo[1,2-b:5,4-b']dipyran-2,8-dicarboxylic acid (1.0 g) was added to a stirred solution of guanidinium carbonate (0.52 g) in water (20 ml) and the mixture was stirred at room temperature until effervescence had ceased. The precipitated solid was collected using a centrifuge, washed with water and acetone and dried in vacuo at 70° C. to give the title compound (0.83 g; 62%).

Provenance & Evidence