1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 66894144, compound

Participants

Reaction Steps

A mixture of 4-benzyloxy-benzoic acid (0.868 g, 3.8 mmol), 5,6-diamino-1,3-dipropyl-1H-pyrimidine-2,4-dione (1.0 g, 3.8 mmol), methanol (15 ml), EDCI (0.95 g, 4.9 mmol), was stirred for 20 hours at room temperature. The reaction mixture was concentrated and water was added to obtain the intermediate N-(6-amino-2,4-dioxo-1,3-dipropyl-1,2,3,4-tetrahydro-pyrimidin-5-yl)-4-benzyloxy-benzamide. It was dissolved in methanol (32 ml) and added 10% NaOH (24 ml). The mixture was heated at 80-90° C. for 3 hours. The mixture was cooled and solvent was removed. The residue was dissolved in water (20 ml) acidified with dil HCl to provide 8-(4-benzyloxy-phenyl)-1,3-dipropyl-3,7-dihydro-purine-2,6-dione (1.2 g, 75%) as a white solid.

Provenance & Evidence