1,2-Diaminocyclohexane, trans- → 1-[4-(4,4-Dimethyl-2-oxopyrrolidin-1-yl)-2-fluorophenyl]-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

HRID 2090036Notes

Reaction equation

HRID 2090036 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.[CH3:29][C:30]1([CH3:36])[CH2:34][NH:33][C:32](=[O:35])[CH2:31]1.N[C@@H]1CCCC[C@H]1N.[O-]P([O-])([O-])=O.[K+].[K+].[K+].C([O-])(O)=O.[Na+]>O1CCOCC1.[Cu]I>[CH3:29][C:30]1([CH3:36])[CH2:34][N:33]([C:6]2[CH:5]=[CH:4][C:3]([N:9]3[CH:14]=[C:13]([O:15][CH3:16])[C:12](=[O:17])[C:11]([C:18]4[N:22]([C:23]5[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=5)[N:21]=[CH:20][CH:19]=4)=[N:10]3)=[C:2]([F:1])[CH:7]=2)[C:32](=[O:35])[CH2:31]1

Participants

8

Reactant 5

HCID 438061,2-Diaminocyclohexane, trans-HCID 62657Potassium Phosphate, TribasicHCID 516892Sodium BicarbonateHCID 6375934,4-Dimethyl-2-pyrrolidinoneHCID 594362141-(2-fluoro-4-iodophenyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

Product 1

HCID 468490791-[4-(4,4-Dimethyl-2-oxopyrrolidin-1-yl)-2-fluorophenyl]-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-oneYield 60.3%

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

A suspension of 1-(2-fluoro-4-iodophenyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one (244 mg, 0.500 mmol), 4,4-dimethyl-2-pyrrolidinone (67.9 mg, 0.600 mmol), trans-1,2-diaminocyclohexane (0.012 mL, 0.10 mmol), CuI (9.5 mg, 0.050 mmol), and K3PO4 (212 mg, 1.00 mmol) in 1,4-dioxane (2.0 mL) was stirred at 110° C. under Ar atmosphere. The reaction mixture was poured into 5% NaHCO3 aqueous solution (20 mL) and extracted with AcOEt (20 mL×3). The combined organic phase was washed with brine (40 mL), dried with MgSO4, and evaporated. The residue was purified by basic silica gel column chromatography (AcOEt/hexane=50%-100%) and silica gel column chromatography (AcOEt/hexane=50%-100%) to give the title compound (142.8 mg, 60% yield): 1H NMR (300 MHz, DMSO-d6): δ ppm 1.16 (6H, s), 2.39-2.44 (2H, m), 3.58-3.63 (2H, m), 3.77 (3H, s), 6.94-6.98 (1H, m), 6.98-7.08 (1H, m), 7.29-7.35 (2H, m), 7.35-7.49 (4H, m), 7.68-7.88 (2H, m), 8.37-8.55 (1H, m). LC-MS (ESI) m/z 474 [M+H]+. Anal. Calcd for C26H24FN5O3.0.2H2O: C, 65.45; H, 5.16; N, 14.68. Found: C, 65.17; H, 5.16; N, 14.55.

Workup

  1. extractionextracted with AcOEt (20 mL×3)
  2. washThe combined organic phase was washed with brine (40 mL)
  3. dry with materialdried with MgSO4
  4. customevaporated
  5. customThe residue was purified by basic silica gel column chromatography (AcOEt/hexane=50%-100%) and silica gel column chromatography (AcOEt/hexane=50%-100%)

Sources & evidence

ORD record
ord-29147dc213d5494ea6fa3822b753a4d5
Source dataset
uspto-grants-2013_05
Patent number
US08435995B2

Reaction notes

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