반응 #1994270

반응 방정식

5-iodo-2′-deoxyuridine

triethylamine

trifluoro-N-prop-2-ynyl-acetamide

bicarbonate

→

crystals

수율 71.1%

5-[3-(2,2,2-trifluoroacetamido)-prop-1-ynyl]-2′-deoxyuridine

수율 71.1%

용매

DMF

Metanol

반응 조건

후처리

1. 1
   workup.ADDITIONwere added to the mixture
2. 2
   workup.STIRRINGstirred for 45 min
3. 3
   여과The mixture was filtered
4. 4
   세척the filtrate washed with MeOH
5. 5
   기타the solvent was removed under vacuum
6. 6
   기타The crude mixture was purified by chromatography on silica (ethyl acetate (EtOAc) to EtOAc:MeOH 95:5)

실험 절차

To a solution of 5-iodo-2′-deoxyuridine (1.05 g, 2.96 mmol) and CuI (114 mg, 0.60 mmol) in dry DMF (21 ml) was added triethylamine (0.9 ml). After stirring for 5 min trifluoro-N-prop-2-ynyl-acetamide (1.35 g, 9.0 mmol) and Pd(PPh3)4 (330 mg, 0.29 mmol) were added to the mixture and the reaction was stirred at room temperature in the dark for 16 h. Metanol (MeOH) (40 ml) and bicarbonate dowex added to the reaction mixture and stirred for 45 min. The mixture was filtered and the filtrate washed with MeOH and the solvent was removed under vacuum. The crude mixture was purified by chromatography on silica (ethyl acetate (EtOAc) to EtOAc:MeOH 95:5) to give slightly yellow crystals (794 mg, 71%). 1H NMR (d6 dimethylsulfoxide (DMSO)) δ 2.13-2.17 (m, 2H, H-2′), 3.57-3.65 (m, 2H, H-5′), 3.81-3.84 (m, 1H, H-4′), 4.23-4.27 (m, 3H, H-3′, CH2N), 5.13 (t, J=5.0 Hz, 1H, OH), 5.20 (d, J=4.3 Hz, 1H, OH), 6.13 (t, J=6.7 Hz, 1H, H-1′), 8.23 (s, 1H, H-6), 10.11 (t, J=5.6 Hz, 1H, NH), 11.70 (br s, 1H, NH). Mass (−ve electrospray) calcd for C14H14F3N3O6 377.08. Found 376.

출처