Potassium Phosphate, Tribasic → (4-(5-(5-Ethyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)pyridin-3-yl)methyl Acetate

HRID 592755Notes

Reaction equation

HRID 592755 reaction equation
Br[C:2]1[CH:3]=[C:4]([NH:10][C:11]2[CH:21]=[C:14]3[CH2:15][N:16]([CH2:19][CH3:20])[CH2:17][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[CH2:54][CH2:53][N:45]3[C:46]4[CH2:47][CH2:48][CH2:49][CH2:50][C:51]=4[CH:52]=[C:44]3[C:43]2=[O:55])=[N:29][CH:30]=[CH:31][C:32]=1B1OC(C)(C)C(C)(C)O1)(=[O:24])[CH3:23].[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].O.C(#N)C>[C:22]([O:25][CH2:26][C:27]1[C:28]([N:42]2[CH2:54][CH2:53][N:45]3[C:46]4[CH2:47][CH2:48][CH2:49][CH2:50][C:51]=4[CH:52]=[C:44]3[C:43]2=[O:55])=[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][N:16]([CH2:19][CH3:20])[CH2:17][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 580439185-Bromo-3-(5-ethyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)-1-methylpyridin-2(1H)-oneHCID 86684143(2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)methyl acetate

Product 1

HCID 86684315(4-(5-(5-Ethyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)pyridin-3-yl)methyl AcetateYield 70.3%

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 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 5-bromo-3-(5-ethyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)-1-methylpyridin-2(1H)-one 208c (300 mg, 0.85 mmol), 3-(acetoxymethyl)-2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)pyridin-4-ylboronic acid 113i (1.21 g, 3.16 mmol), PdCl2(dppf) (35 mg, 0.043 mmol), K3PO4 (361 mg, 1.70 mmol), sodium acetate (140 mg, 1.70 mmol), acetonitrile (10 mL), and water (0.5 mL). The system was evacuated and refilled with N2. The reaction mixture was stirred at 100° C. for 2 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 30:1 dichloromethane/methanol to afford 177a (365 mg, 60%) as a brown oil. MS-ESI: [M+H]+ 611

Workup

  1. customA 50-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser
  2. customThe system was evacuated
  3. additionrefilled with N2
  4. temperatureIt was then cooled to room temperature
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated under reduced pressure
  7. customthe resulting residue was purified by silica-gel column chromatography
  8. washeluting with 30:1 dichloromethane/methanol

Sources & evidence

ORD record
ord-6561bde437504bf686e1556fc9a52f3c
Source dataset
uspto-grants-2016_01
Patent number
US09238655B2

Reaction notes

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