Cesium carbonate → (2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(5-(5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)methyl Acetate

HRID 407831Notes

Reaction equation

HRID 407831 reaction equation
[C:1]([O:4][CH2:5][C:6]1[C:7]([N:21]2[N:30]=[CH:29][C:28]3[C:23](=[C:24]([F:35])[CH:25]=[C:26]([C:31]([CH3:34])([CH3:33])[CH3:32])[CH:27]=3)[C:22]2=[O:36])=[N:8][CH:9]=[CH:10][C:11]=1[C:12]1[CH:17]=[C:16](Br)[C:15](=[O:19])[N:14]([CH3:20])[CH:13]=1)(=[O:3])[CH3:2].[N:37]1[N:38]2[CH2:45][CH2:44][CH2:43][C:39]2=[CH:40][C:41]=1[NH2:42].C(=O)([O-])[O-].[Cs+].[Cs+].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>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].O1CCOCC1>[C:1]([O:4][CH2:5][C:6]1[C:7]([N:21]2[N:30]=[CH:29][C:28]3[C:23](=[C:24]([F:35])[CH:25]=[C:26]([C:31]([CH3:34])([CH3:33])[CH3:32])[CH:27]=3)[C:22]2=[O:36])=[N:8][CH:9]=[CH:10][C:11]=1[C:12]1[CH:17]=[C:16]([NH:42][C:41]2[CH:40]=[C:39]3[CH2:43][CH2:44][CH2:45][N:38]3[N:37]=2)[C:15](=[O:19])[N:14]([CH3:20])[CH:13]=1)(=[O:3])[CH3:2]

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 675370624H,5H,6H-pyrrolo(1,2-b)pyrazol-2-amineHCID 86684026(4-(5-Bromo-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)pyridin-3-yl)methyl acetate

Product 1

HCID 86684090(2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(5-(5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)methyl AcetateYield 42%

Reagents, catalysts & solvents 2

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

Procedure

A 25-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with (4-(5-bromo-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)pyridin-3-yl)methyl acetate 142c (166.2 mg, 0.30 mmol), 162c (24.6 mg, 0.20 mmol), cesium carbonate (130 mg, 0.40 mmol), and 1,4-dioxane (4.0 mL). After bubbling nitrogen through the suspension for 10 minutes, Xantphos (23 mg, 0.040 mmol) and tris(dibenzylideneacetone)dipalladium(0) (14 mg, 0.020 mmol) were added. The system was subjected to three cycles of vacuum/nitrogen flush and heated at reflux for 2.5 h. It was then cooled to room temperature and filtered. The solid was washed with dichloromethane (3×10 mL). The combined organic layer was concentrated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with dichloromethane/methanol (100:1 to 50:1 to afford 162d (50 mg, 42%) as a yellow solid. MS-ESI: [M+H]+ 598.3

Workup

  1. customA 25-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customAfter bubbling nitrogen through the suspension for 10 minutes
  3. customflush
  4. temperatureheated
  5. temperatureat reflux for 2.5 h
  6. filtrationfiltered
  7. washThe solid was washed with dichloromethane (3×10 mL)
  8. concentrationThe combined organic layer was concentrated under reduced pressure
  9. customThe residue was purified by silica-gel column chromatography
  10. washeluting with dichloromethane/methanol (100:1 to 50:1

Sources & evidence

ORD record
ord-83255b262fa34ce1803031d91319c6cc
Source dataset
uspto-grants-2014_06
Patent number
US08754077B2

Reaction notes

Loading…