Sodium Carbonate → 6-(4-(2-Hydroxypropan-2-yl)phenyl)-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-one

HRID 1047224Notes

Reaction equation

HRID 1047224 reaction equation
Br[C:2]1[N:3]=[C:4]2[N:11]([CH2:12][CH2:13][CH:14]3[CH2:19][CH2:18][O:17][CH2:16][CH2:15]3)[CH2:10][C:9](=[O:20])[NH:8][C:5]2=[N:6][CH:7]=1.CC1(C)C(C)(C)OB([C:29]2[CH:34]=[CH:33][C:32]([C:35]([OH:38])([CH3:37])[CH3:36])=[CH:31][CH:30]=2)O1.C(=O)([O-])[O-].[Na+].[Na+]>CN(C)C=O.O>[OH:38][C:35]([C:32]1[CH:33]=[CH:34][C:29]([C:2]2[N:3]=[C:4]3[N:11]([CH2:12][CH2:13][CH:14]4[CH2:19][CH2:18][O:17][CH2:16][CH2:15]4)[CH2:10][C:9](=[O:20])[NH:8][C:5]3=[N:6][CH:7]=2)=[CH:30][CH:31]=1)([CH3:37])[CH3:36]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 591660132-(4-(Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propan-2-olHCID 715670836-Bromo-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-one

Product 1

HCID 582983346-(4-(2-Hydroxypropan-2-yl)phenyl)-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-oneYield 25.9%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
120 °C

Procedure

6-Bromo-4-(2-(tetrahydro-2H-pyran-4-yl)ethyl)-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-one (0.250 g, 0.733 mmol), 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propan-2-ol (0.192 g, 0.733 mmol) and dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II)dichloromethane (0.030 g, 0.037 mmol) were combined in dimethylformamide (1.0 mL). Sodium carbonate (0.311 g, 2.93 mmol) in water (0.2 mL) was added and the reaction solution was then heated in a Biotage Emrys Optimizer microwave reactor at 120° C. for 15 min. The cooled reaction solution was filtered through Celite and the filter cake was washed with ethyl acetate. Filtrate and ethyl acetate wash were combined and solvent removed under reduced pressure. The resulting material was purified using Biotage column chromatography (0-5% methanol in ethyl acetate) followed by trituration with dimethylformamide and water to afford the title compound (0.074 g, 0.19 mmol, 25%) 1H NMR (400 MHz, DMSO-d6) δ (ppm) 12.24 (s, 1H), 7.98 (s, 1H), 7.89 (d, J=8.39 Hz, 2H), 7.53 (d, J=8.39 Hz, 1H), 5.04 (s, 1H), 4.16 (s, 1H), 3.82 (dd, J=11.1, 2.39 Hz, 2H), 3.61 (t, J=7.59 Hz, 2H), 3.25 (t, J=9.59 Hz, 3H), 1.70 (s, 1H), 1.66 (s, 1H), 1.58 (m, 3H), 1.44 (s, 6H), 1.25 (m, 2H); MS (ESI) m/z 397.2 [M+1]+; mp 210-212° C.

Workup

  1. customThe cooled reaction solution
  2. filtrationwas filtered through Celite
  3. washthe filter cake was washed with ethyl acetate
  4. washFiltrate and ethyl acetate wash
  5. customsolvent removed under reduced pressure
  6. customThe resulting material was purified

Sources & evidence

ORD record
ord-e4cad6d0771449fca625469a67c40c75
Source dataset
uspto-grants-2013_10
Patent number
US08569494B2

Reaction notes

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