Trifluoromethanesulfonic anhydride → 1-(2-(Thien-2-yl) pyrid-5-ylmethyl)-5-(4-cyanobenzyl)imidazole

HRID 1418425Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1418425
[S:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[CH:11]=[CH:10][C:9]([CH2:12]O)=[CH:8][N:7]=1.C(N(C(C)C)CC)(C)C.FC(F)(F)S(OS(C(F)(F)F)(=O)=O)(=O)=O.C([N:57]1[CH:61]=[C:60]([CH2:62][C:63]2[CH:68]=[CH:67][C:66]([C:69]#[N:70])=[CH:65][CH:64]=2)[N:59]=[CH:58]1)(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>ClCCl>[S:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[CH:11]=[CH:10][C:9]([CH2:12][N:59]2[C:60]([CH2:62][C:63]3[CH:68]=[CH:67][C:66]([C:69]#[N:70])=[CH:65][CH:64]=3)=[CH:61][N:57]=[CH:58]2)=[CH:8][N:7]=1

Komponenten

6

Edukt 4

HCID 67749Trifluoromethanesulfonic anhydrideHCID 81531DiisopropylethylamineHCID 15411145(6-Thien-2-ylpyrid-3-yl)methanolHCID 158375331-Trityl-4-(4-cyanobenzyl)imidazole

Produkt 1

HCID 99067091-(2-(Thien-2-yl) pyrid-5-ylmethyl)-5-(4-cyanobenzyl)imidazole

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

To a solution of 2-(thien-2-yl)-5-hydroxymethylpyridine (255 mg, 1.33 mmol) and diisopropylethylamine (0.464 mL, 2.66 mmol) in dichloromethane (7 mL) at -78° C. is added trifluoromethanesulfonic anhydride (0.224 mL, 1.33 mmol) and the mixture stirred at -78° C. for 1 hour. To this mixture is added a solution of 1-trityl-4-(4-cyanobenzyl)-imidazole (566 mg, 1.33 mmol) in dichloromethane (5 mL). The mixture is allowed to warm to ambient temperature and stirred for 2 hours. The solvent is evaporated in vacuo. The residue is dissolved in methanol (50 mL), heated at reflux for 1 hour, and the solvent is evaporated in vacuo. The residue is partitioned between dichloromethane and sat. aq. NaHCO3 solution. The organic layer is dried, (Na2SO4) and the solvent evaporated in vacuo. The residue is chromatographed to afford the title compound.

Aufarbeitung

  1. temperatureto warm to ambient temperature
  2. stirringstirred for 2 hours
  3. customThe solvent is evaporated in vacuo
  4. dissolutionThe residue is dissolved in methanol (50 mL)
  5. temperatureheated
  6. temperatureat reflux for 1 hour
  7. customthe solvent is evaporated in vacuo
  8. customThe residue is partitioned between dichloromethane and sat. aq. NaHCO3 solution
  9. customThe organic layer is dried
  10. custom(Na2SO4) and the solvent evaporated in vacuo
  11. customThe residue is chromatographed

Quellen und Nachweise

ORD-Eintrag
ord-bf3697adbfb64a4dbdec293f7204f8f8
Quelldatensatz
uspto-grants-1999_03
Patentnummer
US05883105

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