Potassium Phosphate, Tribasic → (2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(5-(6,6-dimethyl-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)methyl Acetate

HRID 407750Notes

Reaction equation

HRID 407750 reaction equation
Br[C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:21]=[C:14]3[CH2:15][O:16][C:17]([CH3:20])([CH3:19])[CH2:18][N:13]3[N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1.[C:22]([O:25][CH2:26][C:27]1[C:28]([N:42]2[N:51]=[CH:50][C:49]3[C:44](=[C:45]([F:56])[CH:46]=[C:47]([C:52]([CH3:55])([CH3:54])[CH3:53])[CH:48]=3)[C:43]2=[O:57])=[N:29][CH:30]=[CH:31][C:32]=1B1OC(C)(C)C(C)(C)O1)(=[O:24])[CH3:23].C([O-])(=O)C.[Na+].[O-]P([O-])([O-])=O.[K+].[K+].[K+]>O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C(#N)C>[C:22]([O:25][CH2:26][C:27]1[C:28]([N:42]2[N:51]=[CH:50][C:49]3[C:44](=[C:45]([F:56])[CH:46]=[C:47]([C:52]([CH3:54])([CH3:53])[CH3:55])[CH:48]=3)[C:43]2=[O:57])=[N:29][CH:30]=[CH:31][C:32]=1[C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:21]=[C:14]3[CH2:15][O:16][C:17]([CH3:20])([CH3:19])[CH2:18][N:13]3[N:12]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1)(=[O:24])[CH3:23]

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 517045Sodium AcetateHCID 86683972(2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)methyl acetateHCID 866840205-Bromo-3-(6,6-dimethyl-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylamino)-1-methylpyridin-2(1H)-one

Product 1

HCID 86684021(2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(5-(6,6-dimethyl-6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)methyl AcetateYield 50.2%

Reagents, catalysts & solvents 3

HCID 962WaterCatalystHCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 6342AcetonitrileSolvent

Conditions

Temperature
100 °C

Procedure

A 25-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 139e (177 mg, 0.50 mmol), 3-(acetoxymethyl)-2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)pyridin-4-ylboronic acid 116c (207 mg, 0.50 mmol), Pd(dppf)Cl2 (41 mg, 0.050 mmol), sodium acetate (82 mg, 1.0 mmol), K3PO4.trihydrate (266 mg, 1.0 mmol), water (6 drops), and acetonitrile (5 mL). After three cycles of vacuum/argon flush, the mixture was heated at 100° C. for 2 h. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 50:1 dichloromethane/methanol to afford 139f (161 mg, 50%) as a brown solid. MS-ESI: [M+H]+ 642.3

Workup

  1. customA 25-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customAfter three cycles of vacuum/argon flush
  3. filtrationIt was then filtered
  4. customthe filtrate was evaporated under reduced pressure
  5. customThe residue was purified by silica-gel column chromatography
  6. washeluting with 50:1 dichloromethane/methanol

Sources & evidence

ORD record
ord-7d00df8617c541d5846f17115e970200
Source dataset
uspto-grants-2014_06
Patent number
US08754077B2

Reaction notes

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