3,9-Dihydro-1,3-dimethyl-8-((phenylmethyl)amino)-1H-purine-2,6-dione → HCID 178481347, compound

Participants

Reaction Steps

Add 8-benzylaminotheophylline (30 g) and ethyl malonyl chloride (35.1 gm) to 600 ml of 1:1 dioxan/acetonitrile. Heat the reaction mixture to reflux under a nitrogen atmosphere until the 8-benzylaminotheophylline is consumed (ca. 3.5 hrs.). Cool the reaction mixture to room temperature and pour the solution into 800 ml of ether. Filter off the precipitate. Wash the precipitate with ether and dry the product to obtain the title compound, mp. 205.5°-209° C.

Provenance & Evidence