Trifluoromethanesulfonic anhydride → HCID 18779762, compound

HRID 1421756Notes

Reaction equation

HRID 1421756 reaction equation
O[CH2:2][C:3]1[CH:10]=[CH:9][C:6]([C:7]#[N:8])=[C:5]([O:11][CH3:12])[CH:4]=1.[Cl:13][C:14]1[CH:15]=[CH:16][C:17](=[O:51])[N:18]([C:20]2[CH:25]=[CH:24][C:23]([CH2:26][C:27]3[N:28]=[CH:29][N:30](C(C4C=CC=CC=4)(C4C=CC=CC=4)C4C=CC=CC=4)[CH:31]=3)=[CH:22][N:21]=2)[CH:19]=1.CCN(C(C)C)C(C)C.O(S(C(F)(F)F)(=O)=O)S(C(F)(F)F)(=O)=O>C(Cl)Cl>[Cl:13][C:14]1[CH:15]=[CH:16][C:17](=[O:51])[N:18]([C:20]2[CH:25]=[CH:24][C:23]([CH2:26][C:27]3[N:28]([CH2:2][C:3]4[CH:10]=[CH:9][C:6]([C:7]#[N:8])=[C:5]([O:11][CH3:12])[CH:4]=4)[CH:29]=[N:30][CH:31]=3)=[CH:22][N:21]=2)[CH:19]=1

Participants

6

Reactant 4

HCID 67749Trifluoromethanesulfonic anhydrideHCID 81531DiisopropylethylamineHCID 22016838HCID 22016838, compoundHCID 702869365-chloro-5'-(1-trityl-1H-imidazol-4-ylmethyl)-[1,2']bipyridinyl-2-one

Product 1

HCID 18779762HCID 18779762, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
-78 °C

Procedure

To a cooled solution (-78° C.) of 4-hydroxymethyl-2-methoxy-benzonitrile from step 2 (100 mg, 0.61 mmol) and 5-chloro-5'-(1-trityl-1H-imidazol-4-ylmethyl)-[1,2']bipyridinyl-2-one from Example 23, Step 5 (325 mg, 0.613 mmol) in CH2Cl2 (3 ml) was added DIEA (235 μl, 1.35 mmol) followed immediately by the addition of Tf2O (103 μl, 0.92 mmol). The reaction mixture was stirred at -78° C. for 1 hour and was then transferred to an ice bath and stirred at 0° C. for another hour. The solvent was removed in vacuo. The residue was then dissolved in MeOH (3 ml) and heated to 60° C. for 8 hours. The MeOH was then removed in vacuo and the residue treated with saturated NaHCO3 (5 mL) and extracted with CH2Cl2 (2×10 mL). The organic layer was washed with brine, dried (MgSO4), filtered and concentrated. The residue was purified by flash chromatography [4% MeOH(5% NH4OH)/CH2Cl2) to yield the final product.

Workup

  1. customwas then transferred to an ice bath
  2. stirringstirred at 0° C. for another hour
  3. customThe solvent was removed in vacuo
  4. dissolutionThe residue was then dissolved in MeOH (3 ml)
  5. temperatureheated to 60° C. for 8 hours
  6. customThe MeOH was then removed in vacuo
  7. additionthe residue treated with saturated NaHCO3 (5 mL)
  8. extractionextracted with CH2Cl2 (2×10 mL)
  9. washThe organic layer was washed with brine
  10. dry with materialdried (MgSO4)
  11. filtrationfiltered
  12. concentrationconcentrated
  13. customThe residue was purified by flash chromatography [4% MeOH(5% NH4OH)/CH2Cl2)

Sources & evidence

ORD record
ord-b5bc5f01b1434884944a1f67543cf440
Source dataset
uspto-grants-2000_06
Patent number
US06077853

Reaction notes

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