m-Chloroperbenzoic acid → 7-Methoxy-4-((6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methylsulfinyl)quinoline

HRID 219079Notes

Reaction equation

HRID 219079 reaction equation
[CH3:1][O:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7]([S:13][CH2:14][C:15]3[N:19]4[N:20]=[C:21]([C:24]5[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=5)[CH:22]=[CH:23][C:18]4=[N:17][N:16]=3)=[CH:8][CH:9]=[N:10]2)=[CH:5][CH:4]=1.C1C=C(Cl)C=C(C(OO)=[O:38])C=1.C([O-])(O)=[O:42].[Na+]>C(Cl)Cl>[CH3:1][OH:2].[NH4+:10].[OH-:38].[CH3:1][O:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7]([S:13]([CH2:14][C:15]3[N:19]4[N:20]=[C:21]([C:24]5[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=5)[CH:22]=[CH:23][C:18]4=[N:17][N:16]=3)=[O:42])=[CH:8][CH:9]=[N:10]2)=[CH:5][CH:4]=1

Participants

6

Reactant 3

HCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 250640737-Methoxy-4-((6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methylthio)quinoline

Product 2

HCID 21894508Ammonium hydroxide methanolHCID 250669897-Methoxy-4-((6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methylsulfinyl)quinolineYield 47.6%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
-78 °C

Procedure

In a 50 mL round bottom flask under N2 were dissolved 7-methoxy-4-((6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methylthio)quinoline (prepared according to General Method B) (220 mg, 551 μmol) in 5.5 mL of DCM then cooled down at −78° C. and treated with solid m-CPBA (77%) (124 mg, 716 μmol) then warmed slowly to rt over 3 h. The reaction mixture was diluted with DCM then neutralized with NaHCO3 (sat.). The aqueous phase was extracted 3× with DCM then the organic layer was dried over Na2SO4, filtered and concentrated under reduced pressure. The crude mixture was purified by MPLC (ISCO) with DCM/DCM:MeOH:NH4OH (90:10:1)100:0 to 90:10 to afforded 7-methoxy-4-((6-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methylsulfinyl)quinoline (109 mg, 47.6% yield) as a white solid. MS m/z=415.1 [M+1]+. Calc'd for C22H17N5O2S: 416.0.

Workup

  1. temperaturethen warmed slowly to rt over 3 h
  2. extractionThe aqueous phase was extracted 3× with DCM
  3. dry with materialthe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe crude mixture was purified by MPLC (ISCO) with DCM/DCM

Sources & evidence

ORD record
ord-a7f60e9e41534db3877b16ec0d89fc45
Source dataset
uspto-grants-2012_06
Patent number
US08198448B2

Reaction notes

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