Potassium Phosphate, Tribasic → 2-(10-Fluoro-1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)-4-(1-methyl-6-oxo-5-(pyridin-2-ylamino)-1,6-dihydropyridin-3-yl)nicotinaldehyde

HRID 1021834Notes

Reaction equation

HRID 1021834 reaction equation
Cl[C:2]1[C:7]([CH:8]=[O:9])=[C:6]([N:10]2[CH2:23][CH2:22][N:13]3[C:14]4[CH2:15][CH2:16][CH2:17][CH2:18][C:19]=4[C:20]([F:21])=[C:12]3[C:11]2=[O:24])[N:5]=[CH:4][CH:3]=1.[CH3:25][N:26]1[CH:31]=[C:30](B2OC(C)(C)C(C)(C)O2)[CH:29]=[C:28]([NH:41][C:42]2[CH:47]=[CH:46][CH:45]=[CH:44][N:43]=2)[C:27]1=[O:48].C([O-])(=O)C.[Na+].[O-]P([O-])([O-])=O.[K+].[K+].[K+]>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>[F:21][C:20]1[C:19]2[CH2:18][CH2:17][CH2:16][CH2:15][C:14]=2[N:13]2[CH2:22][CH2:23][N:10]([C:6]3[N:5]=[CH:4][CH:3]=[C:2]([C:30]4[CH:29]=[C:28]([NH:41][C:42]5[CH:47]=[CH:46][CH:45]=[CH:44][N:43]=5)[C:27](=[O:48])[N:26]([CH3:25])[CH:31]=4)[C:7]=3[CH:8]=[O:9])[C:11](=[O:24])[C:12]=12

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 517045Sodium AcetateHCID 866842384-Chloro-2-(10-fluoro-1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)nicotinaldehydeHCID 866843181-Methyl-3-(pyridin-2-ylamino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one

Product 1

HCID 866843272-(10-Fluoro-1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)-4-(1-methyl-6-oxo-5-(pyridin-2-ylamino)-1,6-dihydropyridin-3-yl)nicotinaldehydeYield 61%

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 100-mL flask equipped with a reflux condensor was charged with 4-chloro-2-(10-fluoro-1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)nicotinaldehyde 134c (297 mg, 0.57 mmol), 1-methyl-3-(pyridin-2-ylamino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 178b (186 mg, 0.57 mmol), sodium acetate (90 mg, 1.1 mmol), K3PO4 (234 mg, 1.1 mmol), PdCl2(dppf) (50 mg, 0.057 mmol), acetonitrile (25 mL), and water (1 mL). After bubbling nitrogen through the mixture for 30 minutes, it was heated at 100° C. under nitrogen atmosphere for 3 hours. It was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the residue was purified by silica-gel column chromatography eluting with 20:1 methylene chloride/methanol to afford 183a (178 mg, 61%) as a brown solid. MS-ESI: [M+H]+ 513.3.

Workup

  1. customA 100-mL flask equipped with a reflux condensor
  2. customAfter bubbling nitrogen through the mixture for 30 minutes
  3. temperatureIt was then cooled to room temperature
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated under reduced pressure
  6. customthe residue was purified by silica-gel column chromatography
  7. washeluting with 20:1 methylene chloride/methanol

Sources & evidence

ORD record
ord-c5a105b36a4c42d8a1f0def6dede8691
Source dataset
uspto-grants-2014_05
Patent number
US08716274B2

Reaction notes

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