Potassium Phosphate, Tribasic → (2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(1-methyl-5-(5-methylisoxazol-3-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)methyl Acetate

HRID 407707Notes

Reaction equation

HRID 407707 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]=1B1OC(C)(C)C(C)(C)O1)(=[O:3])[CH3:2].Br[C:38]1[CH:39]=[C:40]([NH:46][C:47]2[CH:51]=[C:50]([CH3:52])[O:49][N:48]=2)[C:41](=[O:45])[N:42]([CH3:44])[CH:43]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+].C([O-])(=O)C.[Na+]>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: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:38]1[CH:39]=[C:40]([NH:46][C:47]2[CH:51]=[C:50]([CH3:52])[O:49][N:48]=2)[C:41](=[O:45])[N:42]([CH3:44])[CH:43]=1)(=[O:3])[CH3:2]

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 517045Sodium AcetateHCID 592164565-Bromo-1-methyl-3-(5-methylisoxazol-3-ylamino)pyridin-2(1H)-oneHCID 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 acetate

Product 1

HCID 86683978(2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(1-methyl-5-(5-methylisoxazol-3-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)methyl AcetateYield 87.3%

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 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 3-(acetoxymethyl)-2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)pyridin-4-ylboronic acid 116c (438 mg, 1.06 mmol), 129a (150 mg, 0.60 mmol), Pd(dppf)Cl2 (19 mg, 0.026 mmol), K3PO4 (224 mg, 1.06 mmol), sodium acetate (87 mg, 1.06 mmol), water (5 drops), and acetonitrile (10 mL). After three cycles of vacuum/argon flush, the reaction mixture was heated at 100° C. for 1 h. Analysis of the reaction mixture by LCMS showed complete conversion to the desired product. The mixture was cooled down to room temperature and filtered. The filtrate was concentrated under reduced pressure to afford 129b (300 mg, 87%) as a dark oil, which was used in next step without further purification. MS-ESI: [M+H]+ 573.3

Workup

  1. customA 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customAfter three cycles of vacuum/argon flush
  3. temperatureThe mixture was cooled down to room temperature
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record
ord-7d2abca550c04b048cf7d7436a943876
Source dataset
uspto-grants-2014_06
Patent number
US08754077B2

Reaction notes

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