Water → 3,3-Dimethyl-6-(2-methyl-4-(4-(tetrahydro-2H-pyran-2-yl)-4H-1,2,4-triazol-3-yl)phenyl)-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-one

HRID 1890825Notes

Reaction equation

HRID 1890825 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([C:17]2[N:21]([CH:22]3[CH2:27][CH2:26][CH2:25][CH2:24][O:23]3)[CH:20]=[N:19][N:18]=2)[CH:5]=[CH:6][C:7]=1B1OC(C)(C)C(C)(C)O1.Br[C:29]1[N:30]=[C:31]2[N:38]([CH2:39][CH2:40][CH:41]3[CH2:46][CH2:45][O:44][CH2:43][CH2:42]3)[C:37]([CH3:48])([CH3:47])[C:36](=[O:49])[NH:35][C:32]2=[N:33][CH:34]=1.ClCCl.C(=O)([O-])[O-].[Na+].[Na+].O>O1CCOCC1.C(O)(C)C.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]>[CH3:47][C:37]1([CH3:48])[C:36](=[O:49])[NH:35][C:32]2=[N:33][CH:34]=[C:29]([C:7]3[CH:6]=[CH:5][C:4]([C:17]4[N:21]([CH:22]5[CH2:27][CH2:26][CH2:25][CH2:24][O:23]5)[CH:20]=[N:19][N:18]=4)=[CH:3][C:2]=3[CH3:1])[N:30]=[C:31]2[N:38]1[CH2:39][CH2:40][CH:41]1[CH2:46][CH2:45][O:44][CH2:43][CH2:42]1

Participants

9

Reactant 5

HCID 962WaterHCID 6344DichloromethaneHCID 10340Sodium CarbonateHCID 533752276-bromo-3,3-dimethyl-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-oneHCID 533752283-(3-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4-(tetrahydro-2H-pyran-2-yl)-4H-1,2,4-triazole

Product 1

HCID 533752293,3-Dimethyl-6-(2-methyl-4-(4-(tetrahydro-2H-pyran-2-yl)-4H-1,2,4-triazol-3-yl)phenyl)-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-oneYield 97%

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 3776IsopropanolSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

3-(3-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4-(tetrahydro-2H-pyran-2-yl)-4H-1,2,4-triazole (1 equiv), 6-bromo-3,3-dimethyl-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-one (1 equiv), [1,1′-bis(diphenylphosphino)-ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (0.1 equiv), 1 M sodium carbonate in water (3 equiv), 1,4-dioxane and isopropanol were combined and the system was purged with nitrogen. The resulting mixture was stirred vigorously and heated at 100° C. for 1.5 h. The resulting mixture was cooled to room temperature, diluted with methanol and the volatiles removed under reduced pressure. The residue was partitioned between dichloromethane and water, shaken and the layers separated. The water layer was extracted with dichloromethane. The combined organics were dried over magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified using flash chromatography (20-100% ethyl acetate in hexane followed by 0-10% methanol in dichloromethane) to give the desired product in 97% yield. MS (ESI) m/z 532.7 [M+1]+.

Workup

  1. customthe system was purged with nitrogen
  2. temperatureThe resulting mixture was cooled to room temperature
  3. additiondiluted with methanol
  4. customthe volatiles removed under reduced pressure
  5. customThe residue was partitioned between dichloromethane and water
  6. stirringshaken
  7. customthe layers separated
  8. extractionThe water layer was extracted with dichloromethane
  9. dry with materialThe combined organics were dried over magnesium sulfate
  10. filtrationfiltered
  11. concentrationconcentrated under reduced pressure
  12. customThe residue was purified

Sources & evidence

ORD record
ord-69fd427e88504fff94c733a367d2db3c
Source dataset
uspto-grants-2013_08
Patent number
US08507492B2

Reaction notes

Loading…