Tert-Butyl nitrite → 9-Benzyl-9H-purine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a stirred suspension of 9-benzyladenine (6) (22.0 g, 97.6 mmol) in anhydrous THF (500 mL) was added t-butyl nitrite (9.34 g, 478.5 mmol) and the reaction mixture heated under an atmosphere of nitrogen at 60-65° C. for 4 h. THF and the excess reagent were distilled off and the residue obtained redissolved in chloroform (100 mL) and washed with brine solution (2×50 mL). The chloroform layer was dried over anhydrous sodium sulfate and distilled off to give a reddish oil, which was purified by flash chromatography on silica gel using EtOAc/hexane (8:2) for elution. Yield 10.68 g (42.3%). Mp 99-100° C. 1H NMR (CDCl3): δ 5.49 (s, 2H, CH2), 7.34-7.40 (m, 5H, Ar—H), 8.10 (s, 1H, purine C6—H), 9.06 (s, 1H, purine C8H), 9.20 (s, 1H, purine C2H).

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