1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) → 1-[2-fluoro-4-(3,3,4,4-tetrafluoropyrrolidin-1-yl)phenyl]-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

HRID 1624794Notes

Reaction equation

HRID 1624794 reaction equation
[F:1][C:2]1[CH:7]=[C:6](I)[CH:5]=[CH:4][C:3]=1[N:9]1[CH:14]=[C:13]([O:15][CH3:16])[C:12](=[O:17])[C:11]([C:18]2[N:22]([C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)[N:21]=[CH:20][CH:19]=2)=[N:10]1.Cl.[F:30][C:31]1([F:38])[C:35]([F:37])([F:36])[CH2:34][NH:33][CH2:32]1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.CC([O-])(C)C.[Na+]>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O>[F:1][C:2]1[CH:7]=[C:6]([N:33]2[CH2:34][C:35]([F:37])([F:36])[C:31]([F:38])([F:30])[CH2:32]2)[CH:5]=[CH:4][C:3]=1[N:9]1[CH:14]=[C:13]([O:15][CH3:16])[C:12](=[O:17])[C:11]([C:18]2[N:22]([C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)[N:21]=[CH:20][CH:19]=2)=[N:10]1

Participants

8

Reactant 4

HCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 226459203,3,4,4-Tetrafluoropyrrolidine HydrochlorideHCID 23676156Sodium t-butoxideHCID 594362141-(2-fluoro-4-iodophenyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

Product 1

HCID 468487401-[2-fluoro-4-(3,3,4,4-tetrafluoropyrrolidin-1-yl)phenyl]-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-oneYield 73%

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

A suspension of 1-(2-fluoro-4-iodophenyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one (488 mg, 1.0 mmol), 3,3,4,4-tetrafluoropyrrolidine hydrochloride (215 mg, 1.2 mmol), Pd2(dba)3 (18.3 mg, 0.02 mmol), Xantphos (46.3 mg, 0.08 mmol), and NaOtBu (250 mg, 2.6 mmol) in 1,4-dioxane (5 mL) was stirred for 6 h at 90° C. under Ar atmosphere. The reaction mixture was poured into water and extracted with AcOEt. The extract was washed with brine, dried over MgSO4, and concentrated under reduced pressure. The residue was subjected to basic silica gel column chromatography eluting with hexane/AcOEt (1/1-0/1) and crystallized from hexane/AcOEt to give the title compound (366 mg, 73% yield) as a white solid: mp 175-177° C.; NMR (300 MHz, CDCl3): δ ppm 3.75-3.89 (7H, m), 6.10 (1H, ddd, J=0.8, 2.6, 9.0 Hz), 6.26 (1H, dd, J=2.6, 13.6 Hz), 6.35 (1H, t, J=9.0 Hz), 7.27 (1H, d, J=1.9 Hz), 7.34-7.46 (5H, m), 7.71 (1H, d, J=2.6 Hz), 7.78 (1H, d, J=1.9. Hz). LC-MS (ESI) m/z 504 [M+H]+. Anal. Calcd for C24H18F5N5O2: C, 57.26; H, 3.60; N, 13.91. Found: C, 57.17; H, 3.61; N, 13.79.

Workup

  1. extractionextracted with AcOEt
  2. washThe extract was washed with brine
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated under reduced pressure
  5. washeluting with hexane/AcOEt (1/1-0/1)
  6. customcrystallized from hexane/AcOEt

Sources & evidence

ORD record
ord-6860e4af94ae45369aa77a024317b57c
Source dataset
uspto-grants-2014_07
Patent number
US08778944B2

Reaction notes

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