1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) → 1-{2-Fluoro-4-[3-(trifluoromethyl)pyrrolidin-1-yl]phenyl}-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

HRID 1624833Notes

Reaction equation

HRID 1624833 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]([F:38])([F:37])[CH:32]1[CH2:36][CH2:35][NH:34][CH2:33]1.CC([O-])(C)C.[Na+].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>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]>[F:1][C:2]1[CH:7]=[C:6]([N:34]2[CH2:35][CH2:36][CH:32]([C:31]([F:38])([F:37])[F:30])[CH2:33]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

7

Reactant 4

HCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 177497593-(Trifluoromethyl)pyrrolidine 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 580724341-{2-Fluoro-4-[3-(trifluoromethyl)pyrrolidin-1-yl]phenyl}-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-oneYield 45.3%

Reagents, catalysts & solvents 2

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

Conditions

Temperature
90 °C

Procedure

A mixture of 1-(2-fluoro-4-iodophenyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one (300 mg, 0.61 mmol), 3-(trifluoromethyl)pyrrolidine hydrochloride (130 mg, 0.74 mmol), NaOt-Bu (154 mg, 1.6 mmol), Xantphos (28 mg, 0.049 mmol) and Pd2(dba)3 (11 mg, 0.012 mmol) in 1,4-dioxane (4 mL) was heated to 90° C. for 12 h under Ar. The mixture was extracted with AcOEt, dried over Na2SO4, filtered, concentrated in vacuo and purified by column chromatography on basic silica gel (hexane/AcOEt=10/90 to 0/100) to yield the title compound (138 mg, 45% yield) as a pale green solid: 1H NMR (300 MHz, CDCl3): δ ppm 2.17-2.42 (2H, m), 3.01-3.21 (1H, m), 3.30-3.63 (4H, m), 3.89 (3H, s), 6.11 (1H, dd, J=8.9, 2.4 Hz), 6.20-6.37 (2H, m), 7.24 (1H, d, J=1.9 Hz), 7.33-7.47 (5H, m), 7.71 (1H, d, J=2.3 Hz), 7.77 (1H, d, J=1.9 Hz); MS Calcd.: 499; MS Found: 500 [M+H]+.

Workup

  1. extractionThe mixture was extracted with AcOEt
  2. dry with materialdried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo
  5. custompurified by column chromatography on basic silica gel (hexane/AcOEt=10/90 to 0/100)

Sources & evidence

ORD record
ord-594d166b55864329a2d9d8521a3ff72a
Source dataset
uspto-grants-2014_07
Patent number
US08778944B2

Reaction notes

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