Reaktion #1649

Reaktionsgleichung

chloromethoxy(diethoxyphosphinomethoxy)methane

sodium hydride

diethylphosphate

bis(chloromethoxy)methane

adenine

→

title compound

9-[(Diethylphosphonomethoxy)methoxymethyl]adenine

Lösungsmittel

DMF

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGAfter stirring at 25° C. for 15 hr
2. 2
   Sonstigevolatiles were removed in vacuo
3. 3
   Sonstigethe resulting oily residue was purified by silica gel column chromatography

Vorschrift

To a suspension of 60% sodium hydride in mineral oil (1.4 g, 34.5 mmol) in DMF (100 mL) was added adenine (4.7 g, 34.5 mmol) and the mixture was stirred at 80° C. for 1 hr. To the resulting yellow solution was added dropwise a solution of chloromethoxy(diethoxyphosphinomethoxy)methane [(prepared from diethylphosphate (4.4 mL, 34.5 mmol) and bis(chloromethoxy)methane (25 g, 172 mmol)] in DMF (20 mL) under nitrogen. After stirring at 25° C. for 15 hr, volatiles were removed in vacuo, and the resulting oily residue was purified by silica gel column chromatography using CH2Cl2 /10% MeOH as eluent to obtain the title compound as a colorless oil: yield 6.0 g (50%).

Quelle