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

HRID 1185104
Notes
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Reaction equation

HRID 1185104 reaction equation
Br[C:2]1[CH:3]=[C:4]([NH:10][C:11]2[O:12][C:13]([CH3:16])=[CH:14][N:15]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1.[C:17]([O:20][CH2:21][C:22]1[C:23]([N:31]2[N:40]=[CH:39][C:38]3[C:33](=[C:34]([F:45])[CH:35]=[C:36]([C:41]([CH3:44])([CH3:43])[CH3:42])[CH:37]=3)[C:32]2=[O:46])=[N:24][CH:25]=[CH:26][C:27]=1B(O)O)(=[O:19])[CH3:18].[O-]P([O-])([O-])=O.[K+].[K+].[K+].C([O-])(=O)C.[Na+]>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.O>[C:17]([O:20][CH2:21][C:22]1[C:23]([N:31]2[N:40]=[CH:39][C:38]3[C:33](=[C:34]([F:45])[CH:35]=[C:36]([C:41]([CH3:43])([CH3:42])[CH3:44])[CH:37]=3)[C:32]2=[O:46])=[N:24][CH:25]=[CH:26][C:27]=1[C:2]1[CH:3]=[C:4]([NH:10][C:11]2[O:12][C:13]([CH3:16])=[CH:14][N:15]=2)[C:5](=[O:9])[N:6]([CH3:8])[CH:7]=1)(=[O:19])[CH3:18]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 517045Sodium AcetateHCID 866839433-(Acetoxymethyl)-2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)pyridin-4-ylboronic AcidHCID 866839665-Bromo-1-methyl-3-(5-methyloxazol-2-ylamino)pyridin-2(1H)-one

Product 1

HCID 86683967
(2-(6-tert-Butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)-4-(1-methyl-5-(5-methyloxazol-2-ylamino)-6-oxo-1,6-dihydropyridin-3-yl)pyridin-3-yl)methyl Acetate
Yield 40%

Reagents, catalysts & solvents 3

HCID 44119782Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 6342AcetonitrileSolvent

Conditions

Temperature
90 °C

Procedure

A 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 125a (150 mg, 0.53 mmol), 3-(acetoxymethyl)-2-(6-tert-butyl-8-fluoro-1-oxophthalazin-2(1H)-yl)pyridin-4-ylboronic acid 116c (438 mg, 1.06 mmol), Pd(dppf)Cl2 (39 mg, 0.053 mmol), K3PO4 (225 mg, 1.06 mmol), sodium acetate (87 mg, 1.06 mmol), water (0.5 mL), and acetonitrile (10 mL). After three cycles of vacuum/argon flush, the mixture was heated at 90° C. for 1 h. It was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the resulting residue was purified by silica-gel column chromatography eluting with dichloromethane/methanol (100:1 to 50:1) to afford 125b as a yellow solid (120 mg, 40%). 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. temperatureIt was then cooled to room temperature
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under reduced pressure
  6. customthe resulting residue was purified by silica-gel column chromatography
  7. washeluting with dichloromethane/methanol (100:1 to 50:1)

Sources & evidence

ORD record
ord-ae95e38ee7c94a55b2faf1fd9d4f8f36
Source dataset
uspto-grants-2014_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08669251B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes