N,N-Dimethylglycine → 6-((5-chloropyridin-3-yl)oxy)-1-methyl-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione

HRID 60426

Reaction equation

HRID 60426 reaction equation
[OH:1][C:2]1[CH:24]=[N:23][C:5]2[N:6]([CH3:22])[C:7](=[O:21])[N:8]([CH2:11][CH2:12][CH2:13][O:14][CH:15]3[CH2:20][CH2:19][CH2:18][CH2:17][O:16]3)[C:9](=[O:10])[C:4]=2[CH:3]=1.C([O-])([O-])=O.[Cs+].[Cs+].CN(C)CC(O)=O.Br[C:39]1[CH:40]=[N:41][CH:42]=[C:43]([Cl:45])[CH:44]=1>O1CCOCC1.CC(=O)OCC.O.[Cu]I>[Cl:45][C:43]1[CH:44]=[C:39]([O:1][C:2]2[CH:24]=[N:23][C:5]3[N:6]([CH3:22])[C:7](=[O:21])[N:8]([CH2:11][CH2:12][CH2:13][O:14][CH:15]4[CH2:20][CH2:19][CH2:18][CH2:17][O:16]4)[C:9](=[O:10])[C:4]=3[CH:3]=2)[CH:40]=[N:41][CH:42]=1

Participants

9

Reactant 4

HCID 673N,N-DimethylglycineHCID 10796Cesium carbonateHCID 6062563-Bromo-5-chloropyridineHCID 1188754886-hydroxy-1-methyl-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione2×

Product 1

HCID 1188754876-((5-chloropyridin-3-yl)oxy)-1-methyl-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dioneYield 78.8%

Reagents, catalysts & solvents 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 962WaterSolventHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
135 °C

Procedure

To a mixture of 6-hydroxy-1-methyl-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (See Compound 36, step 2, 500 mg, 1.49 mmol), CuI (85.2 mg, 0.45 mmol), Cs2CO3 (971.6 mg, 2.98 mmol) and 2-(dimethylamino)acetic acid (76.87 mg, 0.75 mmol) in dioxane (20 mL) was added 3-bromo-5-chloropyridine (717.3 mg, 3.73 mmol). The reaction was heated at 135° C. for 5 h followed by heating at 100° C. for 18 h, cooled to RT then diluted with EA (25 mL) and water (10 mL). The organic layer was washed with water (20 mL) and brine (20 mL), dried over Na2SO4 and concentrated to a residue which was purified by chromatography eluted with PE/EA (10:1 to 1:1) to give 6-((5-chloropyridin-3-yl)oxy)-1-methyl-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (525 mg, 78.8% yield) as a yellow oil. LCMS [MH+-THP] 363 and TR=1.403 min.

Workup

  1. temperatureby heating at 100° C. for 18 h
  2. temperaturecooled to RT
  3. washThe organic layer was washed with water (20 mL) and brine (20 mL)
  4. dry with materialdried over Na2SO4
  5. concentrationconcentrated to a residue which
  6. customwas purified by chromatography
  7. washeluted with PE/EA (10:1 to 1:1)

Sources & evidence

ORD record
ord-2944545b1f1949acb305312f1f68db17
Source dataset
uspto-grants-2016_09
Patent number
US09440972B2

Linked notes

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