Potassium Phosphate, Tribasic → (S)-2-(5-(5-(2-Ethyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-4-fluoro-6-(1-oxo-6,7,8,9-tetrahydropyrazino[1,2-a]indol-2(1H)-yl)benzaldehyde

HRID 1843246Notes

Reaction equation

HRID 1843246 reaction equation
Br[C:2]1[CH:9]=[C:8]([F:10])[CH:7]=[C:6]([N:11]2[CH:23]=[CH:22][N:14]3[C:15]4[CH2:16][CH2:17][CH2:18][CH2:19][C:20]=4[CH:21]=[C:13]3[C:12]2=[O:24])[C:3]=1[CH:4]=[O:5].[CH2:25]([C@H:27]1[CH2:32][N:31]([CH:33]2[CH2:36][O:35][CH2:34]2)[CH2:30][CH2:29][N:28]1[C:37]1[CH:38]=[CH:39][C:40]([NH:43][C:44]2[C:45](=[O:60])[N:46]([CH3:59])[CH:47]=[C:48](B3OC(C)(C)C(C)(C)O3)[CH:49]=2)=[N:41][CH:42]=1)[CH3:26].[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>[CH2:25]([C@H:27]1[CH2:32][N:31]([CH:33]2[CH2:34][O:35][CH2:36]2)[CH2:30][CH2:29][N:28]1[C:37]1[CH:38]=[CH:39][C:40]([NH:43][C:44]2[C:45](=[O:60])[N:46]([CH3:59])[CH:47]=[C:48]([C:2]3[CH:9]=[C:8]([F:10])[CH:7]=[C:6]([N:11]4[CH:23]=[CH:22][N:14]5[C:15]6[CH2:16][CH2:17][CH2:18][CH2:19][C:20]=6[CH:21]=[C:13]5[C:12]4=[O:24])[C:3]=3[CH:4]=[O:5])[CH:49]=2)=[N:41][CH:42]=1)[CH3:26]

Participants

8

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 517045Sodium AcetateHCID 86683743(S)-3-(5-(2-Ethyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-1-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-oneHCID 866837562-Bromo-4-fluoro-6-(1-oxo-6,7,8,9-tetrahydropyrazino[1,2-a]indol-2(1H)-yl)benzaldehyde

Product 1

HCID 86683758(S)-2-(5-(5-(2-Ethyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-1-methyl-6-oxo-1,6-dihydropyridin-3-yl)-4-fluoro-6-(1-oxo-6,7,8,9-tetrahydropyrazino[1,2-a]indol-2(1H)-yl)benzaldehydeYield 43.2%

Reagents, catalysts & solvents 3

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

Conditions

Temperature
80 °C

Procedure

A round-bottomed flask was charged with 2-bromo-4-fluoro-6-(1-oxo-6,7,8,9-tetrahydropyrazino[1,2-a]indol-2(1H)-yl)benzaldehyde 121f (159 mg, 0.41 mmol), 122a (213 mg, 0.43 mmol), PdCl2(dppf) (29 mg, 0.04 mmol), K3PO4 (182 mg, 0.86 mmol), sodium acetate (71 mg, 0.86 mmol), acetonitrile (15 mL), and water (1.5 mL). After three cycles of vacuum/argon flush, the mixture was heated at 80° C. for 3 h. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 1:20 methanol/dichloromethane to afford 122b as a red solid (120 mg, 43%). MS: [M+H]+ 678.3

Workup

  1. customAfter three cycles of vacuum/argon flush
  2. filtrationIt was then filtered
  3. customthe filtrate was evaporated under reduced pressure
  4. customThe residue was purified by silica-gel column chromatography
  5. washeluting with 1:20 methanol/dichloromethane

Sources & evidence

ORD record
ord-f263f573092d4037adf41f67943a7a12
Source dataset
uspto-grants-2015_02
Patent number
US08946213B2

Reaction notes

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