반응 #51519

반응 방정식

allyl bromide

Adenosine

P2O5

Sodium hydride

→

title compound

수율 66.0%

3′-O-allyl adenosine

수율 66.0%

용매

DMF

반응 조건

후처리

1. 1
   기타DMF was removed under vacuum and residue
2. 2
   세척was washed with ethyl acetate (100 mL)
3. 3
   기타Ethyl acetate layer was decanted
4. 4
   기타Filtrate obtained
5. 5
   세척eluted with 10% MeOH in CH2Cl2

실험 절차

Adenosine (20 g, 74.84 mmol) was dried over P2O5 under high vacuum at 40° C. for two days. It was then suspended in DMF under inert atmosphere. Sodium hydride (2.5 g, 74.84 mmol, 60% dispersion in mineral oil), stirred at room temperature for 10 minutes. Then allyl bromide (7.14 mL, 82.45 mmol) was added dropwise and the reaction mixture was stirred at room temperature overnight. DMF was removed under vacuum and residue was washed with ethyl acetate (100 mL). Ethyl acetate layer was decanted. Filtrate obtained contained product. It was then placed on a flash column and eluted with 10% MeOH in CH2Cl2 to get the title compound (15.19 g, 66%). Rf 0.4, 0.4a ((10% MeOH in CH2Cl2)

출처