Tetrahydrofuran → HCID 67078499, compound

Participants

Reaction Steps

1,3-Dipropyl-7-(tetrahydro-pyran-2-yl)-3,7-dihydro-purine-2,6-dione (5.30 g, 16.5 mmol) was dissolved in anhydrous THF (250 ml) and cooled to −78° C. nBuLi (2.5 M in hexanes, 6.60 ml, 1 eq) was added, followed by the ditosylate derivative of 4,4-bis-hydroxymethyl-cyclohexanone (7.7 g, 1 eq) and the reaction mixture was slowly warmed to RT and stirred at RT overnight. The next day, the reaction was quenched with sat'd. aq. NH4Cl. The reaction was diluted with water and extracted with EtOAc. The organic layer was dried and concentrated under reduced pressure. Purification by chromatography (2:1 hex/EtOAc) afforded 10.4 g of the ditoylate xanthine derivative.

Provenance & Evidence